Ah, that would probably explain it, if you left ten years ago. "Social Text" was around '96 or so. And it's just priceless.
But rather than try to explain Sokal's assault on the state of modern humanities, I'll let the man speak for himself. Sokal may be a hard-core lefty, but he'll always have a place of honor to me;)
Lemme point you off in the right direction first - start with his
explanation of what he did first, and then go back to the link in my last post and examine the controversy that sprang from it, as well as the original paper itself...