It's when you're laying hose in the starfish of a virgin and right before you about to nut she spins around and takes your shitty load in her mouth. Better if a friend is in the room pretending to sleep and yells THATS A HOT CARL BIATCH. To which you later correct him, No that's The Filthy FIreman!
Mary had a funny taste in her mouth and walked funny all Saturday after The Filthy Fireman Chris gave her! The night before, Mary asked Chris to put it in her starfish after a night of drinking because she was a virgin. Chris did as told. Upon Chris about to cum Mary flipped around and took the load down. Chris's friend quickly jumped off the floor and called it the wrong name. Chris corrected him running out of the house.