weirdalnesia

Best definition
weirdalnesia
Describes a situation when someone is trying to remember the lyrics or title to a popular song, but can only recall the Weird Al Yankovich parody of said song.
Harold: What’s the same of the song on the radio?

Carol: Um, isn’t it something like “Amish Paradise”?

Harold: No, no – you’re thinking of the Weird Al parody. You’re having weirdalnesia.