My comic is educational so I'm a little restricted. I want to present the language in a funny but offbeat way that doesn't come off as too forced.
Generally I try to imagine how the little robot might react if it came across, say, a cat for the first time. Often I'm just sitting on the bus after classes and it kind of clicks together.
I reckon a lot of it comes from television, cartoons and video games. I used to watch a lot of shows and play a lot when I was a kid.