>>81929594 (OP)Facial piercings and tattoos are an immediate, physical red flag. So is her being like >35% body fat I guess (though I do like girls that are on the "plump" side)
As far as social/intellectual, not having a sense of humor is a big one. Being overly flirty as well - as while I appreciate it if a girl shows interest it's a real turn off if she makes sexual remarks about me within a couple hours of meeting me. Anything hinting at a cuck fetish or infidelity disgusts me. Smoking weed, strangely, is a big one even though I dont really care about weed.
There's probably more but that's what I got off the top of my head.