Can mean one of two things:
1) To stroke a penis, either by masturbation or by doing it for someone else
2) To kill someone in Maphia lingo
For definition 1: "I'm whacking off right now.", "Your sister whacked me off last night."
For definition 2: "If I find out Lenny's wearing a wire, you're gonna whack him off.", "I'm going to whack you off if you don't whack off Lenny."
34๐ 36๐
Messed up (or screwed up) or bizarre. A combination of the phrase "out of whack" and "off line".
Does the jet lag still have your body clock all whacked off?
He's dating his step-sister? That's one whacked off family.
8๐ 6๐
To down your drink.
I'll just whack off my pint, then I'm going home to whack off.
36๐ 118๐
Something extremely large or noisy.
"The car hit him and I heard this whack-off BANG"
"She has whack-off breasts." (This can also link to "whack off" meaning "to masturbate")
8๐ 23๐
Also known as W.O.W., this is Entensity.net's service to all us wankers out there. Every Wednesday, they reward their loyal viewers with a full length porn clip!
Hey, it's Wednesday! I'm gonna go see what's on Whack-Off Wednesday today! And maybe I'll whack-off!
30๐ 7๐
When more than one males (excluding females) compete in games concerning the ejaculation of semen. No female spectators are allowed at these events.
David Marcus was disqualified from the wack-off olympics for using performance enhancing drugs. However, he got gold in the smallest penis event.
20๐ 9๐
Whack-Off Wednesday is a day that most young guys observe by jacking off on Wednesdays.
Whack-Off Wednesday is a day I never miss!
611๐ 682๐