Green’s Dictionary of Slang

1. (also platz) to lose emotional control.

c.1926		L. da Costa Kosher Kitty’s Kids II iii: ginsburg: I could platz!
1964		J. Charyn Once upon a Droshky 27: He should only plotz!
1978		H. Selby Jr Requiem for a Dream (1987) 128: I mean that will really spin her head. She’ll plotz already.
1999		J. Stahl Perv (2001) 96: If I had walked in on your little performance two years ago [...] I’d have probably plotzed.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 20: Guy pissed his britches. Guy fucking plotzed.
2018		Twitter 19 Jan. 🌐 I’m awake at 5:30 a.m. so that [...] I can go to the Smithsonian so that I can see the NUTSHELLS STUDIES OF UNEXPLAINED DEATH AND I'M SO EXCITED I COULD PLOTZ.
2023		(con. 1962) J. Ellroy Enchanters 181: De River plotzed [...] and stifled a whimper or screech.

2. to collapse physically; to do nothing; to relax after smoking marijuana.

1945		A. Kober Parm Me 160: All I’m good fa is to plotz in a chair.
1958		W. Talsman Gaudy Image (1966) 155: He had to [...] smoke it away somewhere (usually in the back of the garage), then return, charged, way out, ready for plotzing.
1961		J. Kirkwood There Must Be a Pony! 47: He just kind of plotzed around waiting to fall into some sort of a cushy job.