Gay character coming out on "The Simpsons"

[BITENY]

You don't remember the episode when the Gay Pride Parade was in Springfield and a float went by w/2 people in 2 closets- something along the lines of "We're gay but we haven't admitted it yet" kinda float, and one of the voices you could tell right away was Smithers....the other was either Patty or Selma.