More commonly known as the Smith and Wesson, a brand of weapons originally created by Horace Smith and Daniel B. Wesson. Pistols are typically the more known weapon by S & W.
A party, usually involving beer sluts or hoodrats, that starts out with a large tarp spread on the ground of the party area.
Then, several cases or jugs of Wesson cooking oil are poured on the tarp and clothes come off. People at the party then jump on the tarp and "slip and slide" around.
Often referred to as "wet humping," the opposite of "dry humping."
Mike: Hey, brosef. Are you going to that Wesson oil party?
Jdub: nah, bro. Jamal is hosting the party and the girls he has hangin`around are meth smoking hoodrats.