anal sex, usually performed by ratones
Los ratones were grising all night long!
GRISE:- To Shudder with fear.
If Someone is "Grise" they make one shudder with fear
That Woman/Man over there is Grise, Stay away from them!
A girl that you can control loving her because, fuck men she is adorable.
"omg, Griselys bought me some nuggets, men I love her"