I CTRL+C multiple times instead of once.
this(except command + c)
sometimes i get urges to howl(which i can do, but not really realistically. and i mean howl as in wolf/dog howl)
i get overly attached to fictional characters
i'll sometimes randomly draw pictures of my dog on any nearby paper while on the computer, especially if i'm waiting for something to load
i bite my hair a ton when i'm nervous
when i look at cute things i start laughing like crazy and can't stop and sometimes fall over
can't think of more yet