Tophat is cockney rhyming slang for "Twat" or from the scientific point of view, the female genitalia.

"Twat" is very common British slang therefore all yanks should permanently carve the meaning into their heads when visiting the UK.
OMFGZZZ what are you doing you complete and utter tophat!!!
by Ash Conman January 8, 2005
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an uncircumcised penis. Looking at the penis head on (no pun intended) it looks like a penis with a tophat on.
google penis: uncircumcised penis and stare - tophat
by MStache April 3, 2012
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A fuckin' awesome item to wear upon one's head. Often used in faux-gothic faggy crap, it is actually very nicely used when in a more gypsy-esque fasion. Many people seem to find them amazing. that's because they are!
"dude! the kid was wearing a coo' tophat!"
"I know! It made him look awesome!"
"cuz tophats are awesome!"
by Furreh hugs June 2, 2009
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Where one bro takes a steaming swirl type dump on another bro's head while he is passed out from drinking too much cheap beer.
Whoa dude, we were so wasted and then Jon passed out so I gave him a Temecula Tophat to keep warm.
by Troll Teacher November 23, 2011
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A white male, typically in his mid 20s, who often doesn't know whats best for himself. He regularly spends unnecessary amounts of money on things he doesn't, and never will need. He may also participate in various activities with strangers, usually in their early teens, in a very pedophilic manner.
In his game of Chivalry, the boy tried to explain to the Tophat Kat that buying 64 GB of RAM was completely unnecessary, and was a waste of money.
by Encyclopedia Shitannica January 7, 2014
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When one uses a wool hat as a masturbation aid and, upon being walked in on, places said hat up on their head.
Did you hear about Greg? His mom almost caught him jerking off and he had to pull a messy tophat!
by notnops January 13, 2008
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