Curious to see if anyone else does the same things, as well as what other people do. I'll start: If I'm walking on a sidewalk, I will pace/distance my steps so that the first block I step in only gets one foot for a second, the next block will have both feet end up stepping on it, the third will have one foot for a "two-count" and the other for a "one-count" so they add to 3, and the next will be both feet for a "two-count", adding up to 4. I then go back 3,2,1 and repeat. Also I will never ever touch a crack or gap between blocks unless there is no way around it. I'll routinely do this hard to explain "flutter-tap" on the top of my head by swiveling my hands back and forth quickly in such a way that the right thumb only touches my scalp when the left pinky does, and vice versa. Kind of like a see-saw motion. I've some kind of speech impediment that causes me to, most of the time, not be able to speak into a phone/intercom/any device that carries my voice. I'll have to cough, like I'm clearing my throat, until some magic switch activates and allows me to talk. I'm aware it's kind of off behavior for a 32 year old, but I know there's at least one other person that does the sidewalk thing! Now you share!