Someone who has sex with their friends/teammates mom. The most terrible kind of people in the world to be friends with.
Delonte West was once a friend of Lebron James, until Delonte had an affair and sex with Lebrons mom, Gloria James. This caused the Cavs to lose in the 2nd round of the playoffs to the Celtics, cheating Lebron and the Cavs of yet another championship.
Steve: "Why dont you ever hang out with Bryon? He seems cool"
Charles: "You didnt hear?, hes a Delonte West, fucked his ex-friend Anthonys mom"
Steve: "Eww thats gross, Ill stay away from him."