To tug on one's penis. Often called "jacking off." Very, very pleasurable.
After a hard day of work, I like to whack it because it feels really good.
messed up, unsual, more fucked up then usual
this shit is whack. This is Whack im leavin
1. Street slang, meaning "bad".
2. To assassinate another "mo-fo".
3. Nickelwhack
1. "Man, that's whack!"
2. Tony the legitimate Sicilian businessman got whacked.
3. Hairy Canadian band.
an event, action, or thing which makes no sense or is contrary to a logical course of action; something entirely disagreable or undesirable; A non-sequitor;
That's whack!
The act of completing a task with no forethought or planning what so ever.
Normally in one tenth of the time it should take to do.
Person 1: "I need a nuclear power station safety system for tomorrow".
Person 2: "No problem, i'll 'whack it in' this afternoon".