1.
Comes from the word "whack"
"whackshack" Is a term used to define someone unconventional almost to an insane degree.
The kind of person that will
jump off a 3 storey building into a bush to impress people can be refferred to as such.
2.
Also can mean
the house or hang out area for people who are whack
1.
Person- Did you see
jonathon run cross that busy street
last night?
Other person- Yeah, he's a total whackshack.
2.
Come on boys, let's
just leave them to go back to their whackshack