Oh, and I just remembered I have more of "Row, Row, Row Your Boat."

Row, Row, Row your boat
Gently down the stream
Throw the teacher overboard
Listen to her scream

(then, to a different tune--I don't know why, but I've never heard the two apart)

Five days later, floating down the Delaware
Chewing on her underwear, doesn't have another pair
Ten days later, eaten by a polar bear
Wonder why the polar bear died.

That last bit is to the tune of a Burl Ives song I can't remember the title to. Something about "I knew a man who had a horse."