Well, I think it's a text that's used in a commercial by the Swedish national railway company:

"I... I wish I could swim.
Like the dolphins, like dolphins can swin...
Well, nothing, nothing will keep us together
We can beat them, forever and ever.
We can be Heroes!"

A popular in-joke, created by one of my friends, is to change the word swim to fly.

Well, what do you think is the worst song text ever?

My milkshake brings all the boys to the yard,
And their like
It's better than yours,
Damn right it's better than yours,
I can teach you,
But I have to charge

XD

Reviving this thread while waiting for Tm3:

"Girlfriend" by Avril Lavine (sp?):
"She's, like, so whatever."

Worst line in history.