Ketchup and Potatoes, if Mr. connors is to be believed...

The Ketchup Song
by Stompin' Tom Connors

There was a guy from PEI, they used to call Potato
He met this young Leamington, Ontario Tomato
But he had eyes for other girls and she was a little mushy
So they said, "Well, let's get wed; there's no sense bein' fussy"

Baked sized, french fries, how they love tomatoes
So dress 'em up with Heinz ketchup
Ketchup loves Potatoes
Ketchup loves Potatoes

Well, he went down to Windsor town, to buy a ring on Monday
Saturday, they said, "Okay, we'll cut the cake on Sunday"
But Sunday came, and what a shame, they had no one to fetch it
Without a cake, they just sat and ate potato chips and ketchup

(chorus)

And so this guy from PEI, they used to call Potato
Got two boys and a little girl: two spuds a one tomato
They romp and run around Leamington, and, boy, when they get hungry
The bottle drips all over the chips, way down in the ketchup country

(chorus)