A scientific term used to describe an advanced stage of Chlamydia, in which the genitals are covered with blistery and often puss filled pustules that pop like thunder. Often resembling the face of a pizza delivery boy.
I knew that girl was slutty, but I didn't realize how slutty until I heard her thunderclaps from across the room!
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.