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To laugh so hard that you pee your pants; a combination of laughing and wizzing. Used in an episode of 30 Rock.
"After seeing that show, I was lizzing all night."
by Hotdog99 March 26, 2009
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A combination of laughing ang whizzing according to one Elizabeth Lemon of 30 Rockefeller
Athletic G. W. Bush dodging shoes!

Hahahaha, I'm lizzing! I'm lizzing!
by Mark-Antoine H. March 27, 2009
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Lizzing is a combination of laughing and whizzing, it happens when you're laughing so hard you start whizzing a little too.
I saw Joanie trip and fall down the stairs while carrying a large stack of papers and it was funny I started lizzing.
by Engine-ear March 26, 2009
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v. laughing + whizzing = lizzing.
Tonight's episode of 30 Rock was so funny I found myself lizzing along with Liz Lemmon and Tracy Jordan.
by supersameer March 26, 2009
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The glorious combination of laughing and whizzing (urinating).
That is too funny! insane amounts of laughter I'm lizzing! Stop, stop! I'm lizzing!
by Junkie1 March 26, 2009
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