Green’s Dictionary of Slang

kook up v.

[kooky adj.]

to make eccentric, bizarre.

[US]Time 26 Oct. 60: Weiner...handled the business details and helped kook up the campaigns [HDAS].
Surf Message Board 27 Sept. 🌐 I don’t mean to kook up this board... I just hate that advice being given as a rule of thumb based on weight.