TRIPPIN

(verb, intransitive) 1. to be high off drugs 2. to not be thinking correctly The first usage is used more than the second. The second usage refers to when someone makes a mistake. It follows or takes place of "Oops". "Oops, sorry, I must be tripping." "She's wrong. She's trippin." It is mostly used by African-American groups and may not even be known outside of California.