When a male smacks a female in the face with his penis.
"Oh yeah dude, I SO wally whomped that hoe!!! I even knocked a tooth out and gave her a fat lip!"
to mash vigorously
to have erotic sexual intercourse
Dave: Dood, I totally wally whomped the shit outta that broad.
Dave: Dood, I might just go back for anotha sesh.
Shandel: Ok. do it fam. ill join in.
Kid 1: DOOD I WALLY WHOMPED YOUR MOM.
Kid 2: OMG!? REALLY!?!?!
Kid 3: DOOD YOU WALLY WHOMPED HIS MOM? I DID TOO!
Kid 1: IMA WALLY WHOMP YOU ALL WITH MY PENIS!