Top definition
when you are sitting down and a piece of clothing (i.e a sweater or sweat pants) makes it appear that you have an erection
guy one: oh shit man

guy two: what?

guy one: i got a major sweater boner.(pulls on sweater) i hope no one noticed
by awwshitman April 11, 2010
Mug icon

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