Worst songs to have stuck in your head?

An oldie that was called the "unmentionable song" at our office -- "Electric Avenue" by Eddy Grant and another '90s song I heard on XM recently -- the melody and chorus don't want to leave -- "Brimful of Asha" by Cornershop ...

 

How about a little Rick Astley?:

Never gonna give you up,
never gonna let you down
Never gonna run around and desert you
Never gonna make you cry,
never gonna say goodbye
Never gonna tell a lie and hurt you

 

High on a hill was lonely goatherd
Ladi-o-di-ladi-o-di-la-di-o

 

Here's a few for you:

http://uk.youtube.com/watch?v=2A2QwkmSakU

maybe not the worst song to get stuck in your head, but an easy one to get stuck there:
the song itself:

how easy it is to sing:

 

How bad is it having this stuck in your head?
http://uk.youtube.com/watch?v=Q_4VdV5KvgU

 

There's no period in Dr Pepper. Or so others have claimed on here.

 

Tubthumping -- Chumba Wumba.

Eat that!

 

That ain't so bad --

 

What ever you do, don't do a Google search for "A period in Dr Pepper".

NSFW.

 

At least if that one gets stuck in my head, I can console myself with the knowledge that the guy who sang it was such a failure that he ended up working at a fast-food restaurant.

 

After spending the entire morning singing that goddamn, "Five ... Five dollar ... Five dollar foot-long," song from the shitty Subway commercial, I'll vote for the latter.

 

Take either version of this song:

or

not only is the song bad, but its worse if you get it stuck in your head