There've been more obvious allusions to Lenny and Carl's possible homosexuality in the past than just their constantly being together, but I can't recall any specifics at the moment.
There was also the part in "Behind the Laughter" where Bart paid them to kiss, except Bart never actually paid them. The announcer says something like "Interracial homoeroticism aside...."
Plus, it's obvious that Smithers is gay, since he lives in the gay part of town and works against the Republicans due to his "lifestyle."
My call: a couple of the bullies turn out to be lovers.
Duff, Kearney, Nelson Muntz, and Jimbo Jones are everyone of them all man. And I mean that in the most heterosexual way possible.
Kearney has a son, even.
Maybe Adam meant Fat Tony, Legs, Louie, or Johnny Tightlips?
Flanders got it on with Winona Rider or something, didn't he? All the Christians were shocked that he'd have sex out of wedlock, but when you need it, you need it, even if you're Flanders.
Ok, the episode I was thinking of is the one where Homer and Lenny leave town, and they go past Mt. Carl.
Fontana Labs will now post a comment using the phrase "mount Carl".
What's sad about that last comment is that I was formulating just that remark as I read the second sentence.