It happens a LOT online, funny songs instantly attributed to Weird Al, They Might Be Giants, and The Arrogant Worms. Mostly due to lazy pirates from the good old days of Napster. These lazy morons didn't bother finding out who actually wrote anything, so you had such classic things as that silly Legend of Zelda song credited to System Of A Down, when it was really done by Rabbit Joint Cover, The Heat Is On by Glenn Frey being credited to Kenny Loggins, and, not joke at all, I saw this on my buddy's BearShare several times, Kung Fu Fighting by Carl Douglas credited to... The Foo Fighters. Yeah. Kung Fu Fighting by the Foo FIghters.
So, yeah. Not the Worms. Despite what the guy who drew it believed at the time.
i know the guys that wrote this song. my mom used to be good friends with mcdonald. bird on the other hand, was always reclusive. never much of a friendly guy...
they make some great music, though.