Angry Porpoise
It starts with a male doing his partner from behind. The male then removes his member from the vagina placing the tip against his partners asshole as if he is attempting anal sex. The female immediately looks back at the male making a dolphin or porpoise sound..."Ehh Ehh, Ehh Ehh"...as if saying no way.
She was getting hot during some doggystyle sex, so I tried for the alternative but got only the angry porpoise.