They just discovered they have genitals, and they're ready to share them with you!
It seems like a pretty normal day at Barbieback... The guys know they have no genitals, but they want to rub together anyway. As if by magic they get genitals all of a sudden. Bambi and Angel immediately try to use their new-found body parts and involve David Hollister and Nathan Devos in theor shenanigans too.