when a person is so fat, it causes the edges of their gooch to bunch up and hang down forming titties on their gooch, almost like a pair of meat curtins, but on the gooch
ninja: dude that chick was fatter than hell
folgers: yeah and i think i saw her gooch boobs
ninja and folgers: word.........
When the male partner is having a hard time penetrating the anus and decides to back off and get a running start, therefore generating enough force to tackle the bung.
A.K.A. the Asshole tackle
folgers: dude what did you do yesterday?
Ninja: well i was banging that chick from sheetz and she had a tight ass so a had to give her a bung tackle!