If so, where did it come from?
We call our LO Poots, Princess Poots, Pootsters, Lil' Miss Poots, Mrs. Poots, Poots in Boots, etc. etc. etc.
It started because when she was a newborn all of her farts were wet farts (aka sharts) and one day DH said "You pooted!" (poop + toot). It has stuck since then! We can't ever tell her what her nickname means.... haha!