When in a public gathering you are surrounded by lots of women and initially felling attracted to start talking to them (as a pickup first step) but after closest examination none of the girls worth the effort to approach due the lack of cuteness.
This could be described as a massive Cheerleader Effect.
A: We are lucky to be in the Biology class there are lots of girls to pickup
B: Naaah this class is not a class is a Cheerleader Party, most of the girls are ugly or nerds. This group is so bad that none of these girls worth go for a Popote Special I rather take notes and get an A.