Another word for "puke" is "upchuck". I like the word "upchuck" better than the word "puke". And I really don't like another word that means the same thing-"vomit".

But then again, you probably couldn't make as good a rhyme with the word "upchuck" as you can with the word "vomit". For example, here's a repost from the classic Mudcat thread thread.cfm?threadid=2998#1457484
"Naughty kids' greatest hits II" :

Subject: RE: Naughty kids' greatest hits II
From: GUEST,loreshdw - PM
Date: 12 Apr 05 - 03:43 PM

I don't remember all of the "Comet" song, but here's a little bit:

comet
it tastes like gas-o-line
comet
it makes your mouth turn green
comet
it makes you vomit
so have some comet
and vomit
today!