Here are a few.
Too many books published by a Christian Book Publisher (2 is too many). There is no point going to the batter's box if the umpire tells you that you'll be thrown out at First.
A pet with whom she engage in conversational banter for more than 15 seconds and the pet is into it. Pets have the ability to be jealous and guess with whom she will takes sides.
Dirty bathroom. I get the dirty kitchen thing, but a foul bathroom is a sign her hygeine is worse than a cub scout at summer camp.
Too much of one color, or all black, or all white. I experienced the second two. One girl (not a goth) had this whole erotic vampire schtick that went well with her “Don't touch, don't ask” set of rules. Black sofa, lamps, curtains, coffee table, and rug along with an awesome JVC stereo, black and chrome. Left really fast. The all white apartment chick didn't want me to sit and looked at every place I stepped on the rug as a toxic waste zone. I looked at my phone, questioned the date, and said “oh crap, I have to go…. I'll explain later.”
The first four: Walk fast, Run if you Must. The next is Pick up a CIA manual on how to hide from her forever.
Any music interest in a male singer that includes more than 1 picture of him is a problem. I went out with this girl, who really like Bruce Springsteen….the bedroom was like a small chapel devoted to him. But I like Bruce. Donny Osmond not so much. Its 1983 and I am about to get a peek into the “single” dorm room of my date (quite the perk…no roommate to expel). I walked in, the light went on, and all I could think was that Tiger Beat magazine was staying in business on her purchases alone. You could not see any walls, it was covered in pics of Donny Osmond. Lest you think I ran…..put on pretty romantic side A of Donny Osmond's best love songs, hit the lights, and said “image your fantasy lover…”. She called me Donny all night, she even screamed his name at certain aroused moments. In the morning, I looked apoplectic and said “My dad's name is Donald (true) and I am really weirded out over this. I am sorry….I think I need to talk with someone about this.”. (I was going through a bitter existential phase. Do not judge me, she was pretty.)