This Time Of Night Syndrome. When you realize that your chances of leaving alone tonight are rapidly rising, so you settle for whatever you see.
Also, when a guy has low self esteem, so he assumes he should settle.
1: "Dude, all the decent chicks left already."
2: "Fuck it. I'm coming down with TTMONS. The one with the harelip will do."
1: "I'm an ugly bastard."
2: "Yeah, pretty much."
1: "TTMONS. Her personality is decent."