When a guy is having sex with a chick and his buddy is hiding in a closet with a camera. Once the guy having sex yells, "Gotcha!" he hooks his finger in her mouth like shes a fish and his buddy pops out of the closet and takes a picture.
Last night i pulled the Florida Marlin on my now ex-girlfriend.
Taking a crap on the back of a chick and then forming it into a Marlin's Fin. After you are finished sculpting you stick her from behind.
To perform a Florida Marlin, Poop on back, shape fin, and tap ass