bumginity
When the virginity of ones bum is taken. Often refers to homosexuals.
Liam inserted his penis in Tim's ass. Liam stole Tim's bumginity.
bumgin
A bumgin refers to an individual, female or male, who has never had an anal sexual experience in their life.
Anatashia chose never to have anal sexual intercourse, especially with Greg, and she will forever be a bumgin.