When Homer argues with Marge over breakfast, she mentions they have been married for 10 years. However, they celebrated their 11th anniversary in "Natural Born Kissers". In Dangers on a Train they would also celebrate their 10th anniversary.
This episode seems to destroy Homer being anti-gay, especially a few years later when he embraced the gay culture albeit just to wed gay people and earn money ("There's Something About Marrying").
Homer also mentions sending Al his lyrics for two parody songs, "Livin' la Pizza Loca" (a parody of Ricky Martin's "Livin' la Vida Loca") and "Another One Bites the Crust" (a parody of Queen's "Another One Bites the Dust"). Notably, Al has parodied "Another One Bites the Dust" before, with the song "Another One Rides the Bus".