A rubber glove is a plastic, a rubber, a condom that is used to beat up pussy. The phrase comes from a bay area rapper known as Watzreal.
I put my rubber glove on and beat that pussy up.
When a guy has his penis in a womans vagina, sticks his hand up her ass, and masturbates himself through the membrane between the two cavities.
Opposite to Velvet Glove.
I was fucking her and gave myself the Rubber glove.