In band we sing a similar song...something along the lines of
"
I put my dick up on her toe
yo ho, yo ho
I put my dick up on her toe
yo ho, yo ho
..."
................I dont remember the 'punch lines', but its all very sexual.
It goes toe, foot, leg, thigh, tit, twat, mouth...I think.
Then the end is "I put her in a box & dig her up every now and again & fuck her every now and again"
Some people can come up with some awesomely crude songs.