Saying or typing the word cock repeatedly without having any control over it.
All direct quotes from @cosmicgirlie (who has cock tourettes) on Twitter
Sometimes a cock just totally creeps up on me unawares.
I think I may have slipped several cocks in already, without even thinking about it.
Don't make me throw a cock out there now.
I yell cock on a more regular basis on twitter. That, and I often get my boobs out.