whacked /wækt/ BrE AmE adjective [not before noun] informal
1 . ( also whacked out ) very tired:
You look absolutely whacked.
2 . whacked out American English behaving strangely, especially because of having too much alcohol or drugs
3 . ( also whack ) American English informal a whacked situation is very strange, especially in an unacceptable way:
Everyone was running around naked. It was totally whacked.