Turd Transport
It's when you defecate in your girlfriends mouth and she walks to the toilet and puts it in there for you
"Hey i heard John's wife let him do a turd transport last night"
"oh really, sweet"
"but i'm never talking to her again, her breath is probably horrible now"
"oh really, sweet"
"but i'm never talking to her again, her breath is probably horrible now"