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 5, 2011
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to perform an action in a manner which involves peeing in someone's face while in a crab walk position
During the fight, I decided to ultimately humiliate my opponent Thundercats style, so I peed... in his face!
by PoshFrosh July 11, 2008
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the combination of diareah and vomiting at the same time while sitting on the toilet.
"Whoa, I had a shitty night driniking and I'm feeling a Thundercat coming on"

" I think I will be Thundercating all night"
by Dick Morehead October 28, 2008
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thundercats was an old TV show that was amazing. The thundercats used to shout Thundercats go when they left any said place.
Alex: dude im so glad you found booze
Jimmy: Shit the coppers are coming! Thundercats Are GOOOOO!
by putuporshutup January 13, 2008
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the official derby name of Amber Lee, a member of the South Florida Roller Derby Girls.
"#55 just received an epic whip from her teammate and got lead jam. THUNDERCATS R GO !!!!!!!!!!!!!
by 22mphsk8r November 23, 2009
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A synonymous phrase to be used like 'on God's but obviously not as Godly wording
O: I'm going to sleep after I shower tho
P: oh, I'm getting in them bunz tonight, on the thundercat!
by O-'-N-E-A-L April 2, 2021
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