Sex move. The woman will appear to be a "one-eyed dolphin". Having sex doggy style and the man surprises her by shifting gears and placing his penis into her ass. She will quickly turn and shriek--from your point of view she will appear from the side (one-eyed), the noise she will make will be similar to a dolphin.

When you are fucking a girl from behind and you shove your thumb in her ass and she turn her head and makes a noise like a dolphin saying , “ nuh uh, nuh uh” in disapproval of having a thumb shoved her ass.