1. The act of thrusting ones testicles (sacs) into the general face region of another. This can be executed during a sexual act such as fellatio or without any sexual precursor at all.
2. An insult meant to demean the recipient by creating an image of Sacs repeatedly being slammed against said recipients face.
A waterpolo team assembled by the gods them self, bought together by destiny. Usually have a monster cock and pull all the ladies. Enjoy excessive partying and blacking out. They are believed to have Mediterranean tans and huge biceps.
Guy 1 : why does that guy have a monster dong?
Guy 2 : I don't know, probably a SACS Dolphins
Guy 1 : that guy is always drunk and he always has girls hanging off him, how does he do it?
Guy 2 : dude, he is SACS Dolphin duh!!!
when you have either had severe boob reduction to the point where your tittys sag or if youre just an old geezer who lost their boob fat and have saggy titsthat look like the male sac.