Being interrupted mid-masturbation. Can be when one is directly caught in the act or is interrupted by other means, i.e. an unexpected guest at the door, a phone call, someone coming to check up on them, etc.
I was almost finished choking the chicken when my brother barged into my room and sock blocked me.
Similar to a cockblocker, the shockblocker is reserved for those attempting to block a lesbian hook-up. Although this hook-up may not really involve the shocker (two in the pink, one in the stink)... it will definitely involve at least two fingers and not a cock, and so shockblocker is the most appropriate term.
I tried to hook up with her, but her friend was being such a shockblocker.
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?"