Verb; the ultimate "party foul" in which a person, typically unknown to the master of the house they're at, vomits in a conspicuous location and promptly vacates the premises.
"That asshole you brought over last night puke-n-peaced."
Verb; to use an unforeseen and ultimately detrimental strategy in a board game.
"Go ahead and and buy Park Avenue, dude, Paul blue-babied and sold it."
"Tonight, when we play sorry, I can guarantee you that Andy will Blue-baby."