Over at Inventing Situations, the live capping venue breeds comaraderie and lots of running gags. One day several years ago, a screengrab came up featuring basketball players. tinaw made a caption referencing a myth/stereotype about a certain ethnicity's . . . attributes. E_the_E caught on, and ever since then, they have referenced this gag in several variations anytime they see each other on the board. They also frequently refer to the male member as a 'thwwwper'.
Interestingly enough, after this gag started, Austin Powers' Goldmember came out, with a scene featuring Mini-Me using this same gag.