That's a little different because it originated as a derogatory term against people. I don't dig that use of "gay" either because of that.

"Lame" is an adjective that I have trouble believing is used with any reference to people. When I use (or hear) "lame", it's simply meant that the subject is hindered, impotent, or ineffective. Nowhere present is an implied, "...you know, like cripples".