Top Definition
An abbreviation for "laughing my ass quackingly off."

It's often used as a way to hide one's extreme amusement by confusing the other party into not noticing the break of manly facade. Eventually, they too will either think it's funny or weird and the original incident will be long forgotten.
"lmaqo!"
"The hell, dude?"
"It's laughing my ass quackingly off."
"Haha, right on. Let's go chop some firewood while starting a BBQ."
by Pa.rabola November 08, 2011
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