Green’s Dictionary of Slang

weird out v.

1. to horrify, to play mental games; to disorientate.

[US]R. Price Blood Brothers 32: Stony wanted to ask Chubby if he knew he was singing like a crazy man during the fight but the memory of the sound weirded him out.
[US]R. Price Breaks 188: Oh good, let’s play games, let’s weird out the pickup.
[UK]K. Lette Llama Parlour 102: Don’t weird me out. You’re whacked. You dunno what you’re sayin’.
C. Plum-Ucci What Happened to Lani Garver i: This guy has heard all; you cannot weird him out.
[US]Codella and Bennett Alphaville (2011) 12: It weirds the guy out that a cop knows a spot location.
[US]D. Swierczynski California Bear 20: He was still weirded out by being a surrogate parent.

2. (drugs) to experience or cause to experience hallucinations from intoxication by narcotics.

[US]Smith & Gay Heroin in Perspective.
[US]H. Feldman et al. Angel Dust 152: If they know somebody is weirding out nobody will give it to him.
[US]P. Cornwell Point of Origin (1999) 152: Prozac weirded her out.
[US]F. Bill Back to the Dirt 121: [on LSD] [L]istening to music, have a sudden outburst of laughter, get weirded out.

3. to feel or to cause to feel confused or at a loss, thus weirded out, confused disoritentated.

[US]Eble Campus Sl. Oct. 6: weird out – to have a bizarre effect: That scene really weirded me out.
[US]L. Bangs in Psychotic Reactions (1988) 285: I complained I was getting weirded out by other people.
[US]Eble Campus Sl. Fall 7: weird out – to feel confused and at a loss because of someone’s strangeness.
[UK]M. Dibdin Dark Spectre (1996) 15: Jamie broke into sobs. ‘I’m feeling weirded out. Like totally.’.
[UK]J.J. Connolly Layer Cake 119: I wake up suddenly from my dream, feeling right weirded-out.
[UK]J. Joso Soothing Music for Stray Cats 52: It totally weirds me out.
B. Kroeber ‘Be My Alibi’ in ThugLit Sept. [ebook] Shit is weirding me out.