flip someone out

flip out

1. slang To suddenly express anger or excitement in a very visible way. Mom will flip out when she finds out we broke her vase! When Jenny saw that we'd rented a pony for her birthday party, she totally flipped out.
2. slang To become emotionally unstable or unmoored. I think I flipped out a bit after college because I had no direction in my life. After the divorce, Pete flipped out and started getting into some weird stuff.
3. slang To cause someone to have an extreme emotional reaction, whether positive or negative. In this usage, a noun or pronoun can be used between "flip" and "out." If we rent a pony for Jenny's birthday party, it will totally flip her out. No way, man—haunted houses really flip me out.
See also: flip, out
Farlex Dictionary of Idioms.

flip someone out

verb
See flip someone off
See also: flip, out, someone
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • flip out
  • freak out
  • phreak
  • freak out, to
  • freak someone out
  • freaked
  • freaked out
  • freaking
  • freak out over (something)
  • give (one) a thick ear