Mung, as far as I am aware, is the mixture of shit and semen. So a mung fart is a fart expelled following anal sex.
"I went into a gay bar to ask for directions, and it really stank in there. Must have been lots of mung farts in the air."
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug