The group of single folks, typically in their 30's, who go to singles groups or dating schemes for the purpose of trying to find men (or women). Since they've probably been dumped several times and are desperate to sell, they are known as the clearance rack.
Jamie goes to a bunch of speed-dating nights each week - she's definitely on the clearance rack.
guy 1: dude! check out that girl's assets guy 2: wtf are you talking about she has a clearance rack
guy 1: no dude her moms
guy 2: oh snap look at those jugs
By Layne
Clearance Rack
1: A classification of people who are considered less than substandard to date or hook up with due to looks, income, or personality.
2: The people who hang out at the bar after it has cleared out.