His feet were covered in blisters
He had no knickers to put on
So he put on his sister's

Oooh yes, the joys of poetry. And if you are with a gang of mates just keep making up boy/burning deck poems and you are bound to raise a laugh.

eg

TBSOTBD
he was feeling rather silly
The flames grew higher and higher
And burnt the end of his well developed sense of humour...
See I didn't go for the obvious "rude" ending.
Here, fill the last line of this one in yourself

TBSOTBD
he couldn't believe his luck
he realised he'd soon have to move,
As it was getting hot as f

Eh?