Making tummy puddles refers to male masturbation, it comes from the 'puddle' of seimen left on the males abdomen after explusion.
Some fine thing went by me today, was up all night making tummy puddles after.
by markers May 26, 2008
Upon conclusion of intercourse, one removes his sword from the tunnel and releases tummy puddles on the opposing partners stomach.
When I was just about to finish, I pulled out and gave her some tummy puddles.
by @SlickNick911 February 06, 2015