on some other shit

on some other shit

rude slang Behaving oddly or irrationally. You're on some other shit if you think this plan is going to work. When I went downstairs earlier, my legs were on some other shit, and I fell down half the steps. That's how I twisted my ankle.
See also: on, other, shit
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.