So you know PETA was pissed at TMZ for calling the organ-ization out after we ribbed an animal rights activist out for eating at a steakhouse. PETA felt it was just ducky for non-meat eaters to eat at meat eateries.

Turns out Morrissey -- who is a vegetarian -- wasn't actually at STK on Monday, but at the Belmont, the joint next door. Moz's rep tells TMZ that he not only didn't go to STK -- he would never go to a steakhouse! Meat IS murder. That kinda leaves PETA hangin'...

So how do ya like them meatballs, PETA?!