noun - A function of anatomy, where one has attempted to retain stool for release at a more convenient time and place, moreover, is the backing up of one's plumbing
system. Acronym for "Reverse Gut
Flow", coming from the body eventually succumbing to the inward
force. Sometimes characterized by a gurgling noise within one's gut.
I was on a date at
Maggie's
parents house, and couldn't use there bathroom. Halfway through
dinner I got some major RGF, and everybody thought my stomach was growling.