I was thinking Barney would be a good choice. Remember that episode where Homer panics because he thinks Bart might be gay? And Barney and Moe are totally homophobic? It would totally blow Homer's mind if one of them were gay. But Moe is funnier as a degenerate pervert.
Flanders? But that'd probably give Homer another reason to dislike him tho he did kiss Ned awhile back. Yup, on the lips. In public at a football game IIRC.
If it were the comic book guy, it'd be insult to injury. Worst. Person. EVER.
Hmm. The Ah-nuld clone? Kent Brockman? Sideshow Bob? Sideshow Mel? Chief Wiggum?
""In case you didn't notice, Patty had always indeed leaned towards homosexuality at times. In this episode, Patty falls for a local female golf pro. Springfield legalizes gay marriage, and Homer becomes a minister by registering online. This may spell an outing for the love-stricken Patty. However, be on the lookout for a possible twist ending."