Wack
From open-dictionary.com - the free dictionary.
Noun
wack
- A person who either is "whacked" (i.e. mentally disturbed), or is a "whackoff" ( ignorant and irresponsible)
Synonyms
- Wackjob
Adjective
wack
- In hip-hop slang, inauthentic or "lame" ("Every record they ever made was straight-up wack.")
- "out of whack" is a phrase referring to things which are out of their proper order-- i.e.: "Something knocked the (insert noun) out of whack".