Kneebagged
(Adv.) like tea-bagging, but walking up to a relaxing person - in a reclining position - and just dropping your nuts on their knee, unsuspecting.
Yo bro, look over there!
(Nut drop on knee)
WTF man! I can’t believe you kneebagged me again!
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.