Drinks too much or does stupid things when he drinks.
Forgets to pay his credit cards or can't pay them.
Gets into fights (physical or verbal).
Seems to have ADD or is bi-polar.
Hates his mom.
Loses jobs or job hops because he never is happy.

Obviously leers at other women in front of me - not once, but multiple times

Since you specified a "dumb move" rather than like, a personal quality (not smart, etc.) - I'll say flakiness. These days men (and I do mean MEN, not boys - I'm in my mid-30s and not dating young guys here) will ask you for a date, then want to reschedule several times, or cancel and you don't hear from so you write them off, then you hear from them and they want to go out again, etc.
It's happened several times to me and my single friends. You can't tell if they're OBOing you (Or Better Offer aka trying to juggle more women than they can handle/keep straight) or if they are just naturally ditzy.

He shows off the tattoos he got in prison.

Anonymous wrote:If he plays games, if he's rude to people he considers below him, mean to animals, etc.

23:49 here. Yeah, that's a big one. But honestly, when I was dating, I was usually turned off if a guy didn't like animals as much as I do.

Well, I'm married, been with my husband for 7 years now, so it's been a while since I've revisited my dating deal breakers, but let's see, here's a few things:

1) closed minded and controlling. If they hint at how I should behave/dress/carry myself, et cetera.

2) know-it-all behavior. I dropped a guy who felt it necessary to offer unsolicited advice on every aspect of my life -- from my workouts to how I cared for my pets to my relationship with my family. He was older and seemed to think he was wiser, despite the fact that his last marriage was a disaster and his kids were spoiled and obnoxious (and no, I never offered advice on how he should deal with his out-of-control teenaged kids, but he constantly kept telling me "As a parent, I learned...." when trying to tell me how I should live my life.

3) being obsessed with appearances/vanity.

4) being either extreme of not at all wanting to get close or trying to get too close, too fast.

I guess those were my main deal breakers.

If he plays games, if he's rude to people he considers below him, mean to animals, etc.

Rude in any way. Passive aggressive in any way to me or rude to any service people. If he gets snippy with me I am done in two seconds.

Comes on too strong. One guy was talking marriage by the third date! Another told me he dumped his girlfriend for me.

The worst, though, was the guy who told me he had built a computer from scratch and had named it after his mother.

Racist comments

Radio silence. He expects to pick up from where he left after a week of absolutely no communication.

If he's dumb. Like a sharp guy who stands up to me.

Lies about little things. Almost always a big red flag.

He talks incessantly about his ex.

You meet this attractive, eligible, fun guy and you are interested. What dumb move he makes that you walk away?