Personally I think that calculating trajectories one is pretty useful and it's something I do myself
As for my relatively useless skills I can:
- roughly determine a person's shoe size looking at their feet (rubbed off from an old boss of mine; i'm nowhere near his skill level though)
- quote/recall scenes and obscure lore from the sonic franchise
- recite more than a dozen different vines from memory
- identify specific shades of a color
- develop interest in mobile games that next to no one cares about
- lucid dream
-find random obscure songs (more a hobby than a skill though)
Do explain that last one
- I can read minds but it's useless because it happens at random and I have no control over it
- I'm pretty good at finding lost stuff, but I rarely misplace anything
- 90% of the time I can tell who's the culprit in a crime/detective story, simply because it happens to be my favorite character... it goes like this "Wow, that guy, I already like him! ..............Oh no..."
- I somehow have the skill of falling in love with doomed characters. I started to joke that I have a graveyard dedicated to all my dead favs. (I'm running out of space, seriously)
I can do this one too, haha. Though I'm very short anyway... But also because of that:
- Being creative when I need to reach high places - because I'm too shy to ask people to help me out. (Once I brought a big stick with me to the supermarket because I knew what I want to buy is on the highest possible shelf.)
- Speaking in a very deep, monster voice to scare others.
- Drinking from a bottle upside down or in any possibly poses
- Easily getting attached to characters I didn't create (the reason why I have a huge amount of unused OCs I bought from other people...)
I can:
-Lick my elbow
-my chest skin can stretch to my chin
-my thumb can touch my forearm
-my tongue touches my nose
-I can eat anything and not gain any weight (to the point where I was considered malnourished even though I ate a lot)
-I have the power of losing weight when I don't exercise
-I can find an unknown manga at the time, get obsessed with it, and it turns into a juggernaut of popularity (happened with food wars, rising of the shield hero, goblin slayer, kenja no mago; found them all almost 1 to 5 years before the anime or popularity happened)
Same. xD Especially the color shade one. I drive my friends mad by it since they're not even aware some shades of colors actually have names.
And my useless skills:
- I can twist my foot 180 degrees and walk like that.
- I can smell awful smells from a very long distance, I can even wake up because something on the other end of the house started to smell
- I'm decent at recognizing local butterfly species
- I can remember long song titles
- I'm good with making puns
- I can roll my tongue like Buttercup in that one Powerpuffs episode
- I somewhat can growl but I cannot sing to save my life
I can make my index finger on my right hand go limp and when I move my hand fast up and down, it slaps against my thumb and middle finger to make a snapping noise. For most of my childhood I thought that was how people snapped their fingers.
I can rotate my ankles and make my feet face outwards in a horizontal line. If I kneel down my feet lay flat sideways. That one always freaks people out because I do it unconsciously at work when I clean spills off the floor. (I'm a janitor)
- great memory for Japanese names exclusively
- drinking a few litres of water in one sitting
- great attention to details... I am that person that will see that someone is lacking a second earring through a window of a cafe I walk past. Yes, totally useless.
- can sit in one spot for hours without moving at all, all the places I sit in have a special pit from my butt
- ... but then faint after standing for 20 minutes
- curling my tongue xD
It's a bit weird...basically, I have a knack for taking those people that some might write off as 'below average' or 'geeky' or just plain old 'ugly' and seeing them as a potential lover might see them...finding the beauty in the lines of their face, or the shape of their smile. Normally if I find someone ugly, it's due to their behavior, not their actual looks.
If nothing else, I know I have a lower threshold for 'that guy/girl is so CUTE' than most people would. I mean, it's either that, or I just happen to be constantly surrounded by conventionally beautiful people, which seems less likely to me.
-being able to reference every beatles song/cartoon
-knowing useless history facts
-i can twist my arm 360 degrees
-i never have to stop on road trips, no matter how long
- i can identify smells in a weirdly specific way
-i can speak cat
-i know swear words in latin
-i can eat a whole buffet and not gain a pound
-i can find secret truths about people that make them sad but I feel bad about it so I don't talk about it often
-i know how to commit a suspicious number of crimes and get away with it, but id feel bad do i dont
-i can pickpocket anything off anyone as long as they're not paying attention
I used to be really really good and fast at cutting out figure outlines, if I do a large group of the same image it ends up looking die cut. I could even do this in a car while driving (not me driving, me sitting in the passenger side to clarify) 3 hours to a convention and it would still look the same if I was cutting them at a still table at home... which often resulted in the car being fuckin mess despite how clean I tried to keep it with baskets and plastic bags)
It got to the point when I sold my character stickers at conventions artists would constantly come up to my table and ask me where I got them cut, with them looking surprised when I told them they are not die cut and I cut them all out myself, or really fucking pissed because they thought I was lying and for some reason didn't want to share my secrets information with them????
I can't really do that anymore because arthritis, but it was a thing.