Wack (adjective)

Crazy, insane, not normal or standard, poor quality.

Origin:

Early 21st century : origin unknown, informal.

Examples:

1. His behavior is wack, I don't know what to expect from him.
2. That party was wack, I didn't even have fun.
3. That rapper's flow is wack, he needs to step up his game.
4. His outfit was wack, it didn't match and it looked like he just threw on random clothes.
5. The movie plot was wack, it didn't make any sense.