When fucking a pregnant woman with a girl on the way, thereby fucking her in the process.
Steve: Hey, you see that chick over there?
Justin: Who? The pregnant one?
Steve: Yeah dude, she's pretty hot.
Justin: Man, I'd really love to give her a double stuffing.
when a female in taking two dicks at once. in the pussy, in the ass, all we know is its packed. possibly 2 or more penis inserting in poontang.
that double stuffing sure stretched out my pussy.