funny mud go pee

similar to "funny mud pee", which is similar to "go fuck your self/bull shit", it is popular on Chinese social forum because it pronounce like "放你妈狗屁" in chinese

A: 我能连一夜七次(I can cum 7 times in one night)
B: Funny mud go pee, 鬼才信你( bull shit, I don't buy it