When a straight heterosexual male accidentally sticks his thumb up another man's rectum, purely by mistake. Usually occurs in male community showers at gyms or prisons/correctional facilities and dark rooms.
As I entered the dark room, I slipped and fell on Greg's bed, accidentally giving him a wilbert.
As the doctor was checking my cheeks, he accidentally gave me a wilbert.
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug