Lets say a guy dates this girl in college. After a year and a half, she abruptly turns very mean on him and breaks it off. Then, she (who had been a virgin before this relationship, no less) promptly goes and screws two of his fraternity brothers/friends, who also happen to be each others biological brothers (!). She winds up dating the second one for a year or two (!!!) thus qualifying herself as "slunk meat".

Jim gave me a righteous slunk dinky last night

Damn that bitch got them slunk meat titties. The kinda that just sag to da floor

Dude, you should go to bed. You're crazy slunk right now.

Jeez, Savannah is such a slunk.

Damn, did you see Shaq slunk that bitch? He broke the rim!

"Yo don't pay attention to what I said last night man, I was super slunk and don't remember anything."