In the UK, back in 1985, we used to sing at Brownies (girl scout)camp:

be kind2 ur webbed footed friends
4a duck may be somebodys mother
all alone in the swamp
where its always cold and damp
u may think that this is the end
but to tell u the truth im a liar
we sing this thru once again
but this time lets sing a little higher.

(repeat until bored or insane - until the last verse where it says
you may think that this is the end
And in this case you're right.)