1 definition by Mr. C Dub
The act of two partners bending over and going ass to ass and thaking a shit at the same time. However sometimes if the two partners both have diarreha it can rsult in a 'Bertha Fountain'.
Rosalie and Brett left a giant mess in the bedroom after doing a few rounds of hot berthas in there.
by Mr. C Dub January 22, 2010