wedgie

n. shoe that has a heel shaped like a wedge; state of having pants or any other piece of clothing stuck between the buttocks

A wedgie is the practice of pulling someone's underwear up causing the underwear to wedge between the buttocks. It can be inflicted as a practical joke, or as a form of bullying, depending on the context and people involved, and can often be painful to receive. A wedgie can also happen when a person's undergarments get bunched up and "ride up" between the buttocks, causing discomfort and annoyance. This can be caused by bad posture, awkward sitting or tight underpants. This is used as a torture device from bullies.
See more at Wikipedia.org...

Noun
1. a shoe with a wedge heel
(hypernym) shoe
(part-meronym) wedge heel, wedge

(Fairchild) A bug. Probably related to wedged.

slang. การแกล้งผู้อื่นโดยการดึงการเกงในให้เข้าไปอยู่ระหว่างก้น (มักทำโดยเด็กหนุ่มที่เมาเหล้า)