Fraternity/sorority slang for female masturbation/masturbation implement. Origin unclear, although southern colleges seem to be the main source.
Possible derivation fromspread of Spanglish in schools, from the wordpussy, and general tendency to assign male attributes to dildos.
1. The guy cheated on me so I dumped him. For now it's nothing but El Pus for me.
2. He's taking a semester away so now I spend Saturday nights with El Pus.