psych out

psych out  {v. phr.},  {slang},  {informal}
1. To find out the real motives of (someone).
Sue sure has got Joe psyched out.
2. To go berserk; to lose one's nerve.
Joe says he doesn't ride his motorcycle on the highway anymore because he's psyched out.
Jim psyched out and robbed a liquor store, when he has all he needs and wants!
Categories: {informal} {slang} {v. phr.}