A wedgie is the act of forcibly pulling a person's underpants upwards from the back, thus forcing the fabric into the intergluteal cleft uncomfortably. The act is often performed as a school prank or a form of bullying.
Wedgies are commonly featured in popular works, either as a form of low comedy or as a behaviour representative of bullying. In such works, briefs are usually the type of underpants that are worn by the victim.
The same term can also refer to the situation wherein any clothing worn over the buttocks randomly becomes wedged between them.
Wedgies, especially when performed on males, can be dangerous, potentially causing testicular or scrotal damage. An incident in 2004 involving a ten-year-old boy required reattachment of a testicle to the scrotum.
There are various versions of the traditional wedgie that can be used as pranks or a form of bullying. It is impractical to list every variant, as the names and processes can be rather subjective; however, below are a few better-known variants of the wedgie.