A feeling usually experienced by thirteen year old boys when bumping into or brushing past a person of the opposite sex. The pent-up sexual tension causes a sudden pulse to the cock, occasionally resulting in an awkward boner.
Tom: Yo Jon, when Jenny bumped past me in the hall, I totally felt a Cockpulse. I couldn't stand up during my entire next class!
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"