A vagina with a very strong and disturbing smell.
Man when I pull them pants down, I got a whiff of that thundercat.
by ojdajuiceboy April 07, 2009
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A sound a woman makes from her vaginal canal.
"Man, last night my girlfriend made the loudest Thundercat"
"You mean queef?"
"No, Thundercat"
by bombtrack_ratm December 13, 2009
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A phrase that can be used to express extreme joy and happiness for a team win or as a team cheer before a game. Comes from the old "Thundercats" show from the 80s and 90s, that everyone watched.
"Yo, we got a 99 on our final project, Thundercats HO!"

"We must wreck this other team, now huddle up, 1-2-3 Thundercats HO!"
by Paul Wall II February 20, 2007
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An affliction describing the state in which something encountered during one's childhood is remembered as being of high quality, but when revisited several years later, is discovered to be of much lower quality than first thought.
"Remember how much we thought 'Dino-Riders' rocked when we watched it back in grade school? I saw it again last weekend... and man, we were retarded. That's some thundercats syndrome right there."
by Discocorpse January 16, 2009
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When you fuck a girl in the ass and punch her in the guche.
Omg i am so sore from that Russian ThunderCat you gave me last night.
by Babiigirlhere July 05, 2011
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