A Mid Stink Munch Box (MSMB) is when the
woman is defecating on the toilet and the man is going down on the
woman and performing cunnilingus. It is important to note that the cunnilingus must be taking place while the
woman is defecating (fecal matter must be in the toilet while the act). This practice is often confused with the Cunnilumpkin, where the woman can be faking the defecation during the sex act. The MSMB is very rare because of the specifics of what it qualifies for.