While having sex doggy style you reach towards the womans mouth and curl your fingers behind her lower front teeth creating a hook which allows you to pull her back into you while having sex.
The girl Sammy from the Globegot jawjacked hard last night while listening to Slayer.
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.