back teeth are floating 

When somebody has to pee so bad that the urine has filled their whole body all the way up to the back of the mouth and makes the back teeth float in urine

I had to piss so bad that my back teeth are floating

back teeth are floating by KevlarKev October 28, 2007

my back teeth are floating 

Rude form of, “I need to urinate.”

A man is talking to another and states, “ oh wait a minute, my back teeth are floating.” Then walks off and urinates.

my back teeth are floating by Juliet.whiskey.Tango.Foxtrot May 17, 2021