Shelfing is an activity where people try to fit themselves inside a closet. It is a prerequisite for proper shelfing that the closet is not larger than your body volume plus 0,5 m3.

Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)

The act of placing drugs inside the vagina as a way of ingesting them

A common photography pose in which a person places their hand beneath their chin, forming a sort of shelf for their head to rest on, in order to better frame their face. When such a pose is used for a selfie, the resulting image is called a "shelfie"

The act of sitting on an elevated surface while consuming alcohol at a social event to lure the opposite sex.

Shelfing is the the act of one inserting drugs into the anus. Using your finger, about middle knuckle deep if you reach back you’ll feel a little shelf. Place the drugs onto this otherwise they will just come back out. App

When a person comes up behind a female and places their arms around them in a hug, the arms are placed under the bosom and are squeeze so the breasts bounce up a bit.