Community Season 2 Episode 7 (Community s02e07) with title “Aerodynamics of Gender” aired on Thursday, November 4th 2010 at 08:00 pm via NBC Network.
Here is summary for Community Season 2 Episode 7 :

After a classroom smackdown with a group of “mean girls” led by Meghan, Britta, Shirley, and Annie bond with Abed by turning him into the ultimate “mean girl.” Meanwhile, Jeff and Troy embrace a zen-like spirituality under the guidance of a groundskeeper when they come across a secret trampoline on campus.