So your having your tonsils out and that really sucks
But it doesn't suck as much as septicemia!
Or even as much as the sucky old days
When they'd take out yer tonsils with rusty razor blades!

And though you and your tonsils, have been real great pals
Even old friends have to part!
So, be happy that you live in these happy old days!
When taking out yer tonsils can be fun!

Now getting just the right tune takes some creativity, but I hope this helps... I generally find a rambling sort of George Burns approach fits the words, first penned by Bobbie Burns, (the plumber from Bayside, not the Scottish Poet...)
Good luck to the wee cruther
Larry