Brittish (and occassionaly American) slang for condoms.
I bought a packet of party hats.
by badger777 August 24, 2005
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A fat girl who dresses like a slut and thinks she's hot shit
Fuck it is slim pickings tonight, I might go for that Party Hat
by Best Bro February 13, 2010
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Hat made of newspaper or plain paper via the following steps:

1. Fold the paper in half
2. Fold down each side to make triangles
3. Fold the bottom flap up
4. Flip the hat over and fold the other bottom flap up
5. Secure the hat with scotch tape

The hat should look like Calvin's Supreme Dictator-For-Life hat.

The party hat is made prior to a party and inscribed with an initial statement such as "The Drunken Sailor Hat (Write Quotes, Rummie)." The hat is then ushered into a party, where it is requested and written upon whenever someone says a hilarious drunken quote that deserves merit. The hat is then laughed over the next day.
"I think the best quote on the hat is 'Bigfoot is not a dinosaur.'"
by Zeke November 21, 2004
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Can be spelt P4rTii H4t if you are a serious faggot
It is either:
a) A condom
or
b) A hat that you are wearing at a party, possibly as a joke.
Person A: "You look like a cunt"
Person B: "Stop berating me, it's a party hat you stupid faggot.
Person A: "Just take it off!"
Person B: "Fuck you, you gaylord
by Jim Hender May 4, 2008
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Large, Obnoxious, Pointy Nipples that are sharp to a degree in which they could cut glass.
Zach: Dude, it's fucking cold.

Kevin: Yeah dude, your party hats are showing
by eS Butcher September 8, 2012
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A VERY expencive item that you can buy on runescape for 5-30mil gp, (gold pieces) there are lots of different kinds of phats such as: pink, blue, white, purple, green, and just about any other color you can imagine, if you were a party hat to a drop party, people will drop cool stuff next to you, it was originally formed out of a "cristmas cracker" that you pull with anouther person that also has a cristmas cracker, and you would then each get a different colored phat!
Party hat's are very very expensive :D
by Kyle Biddle August 2, 2004
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A fat joint in a cone shape, packed with weed. Its size and shape almost resemble that of a classic party hat and it is designed to deliver one hell of a party.
I got a fucking party hat going on over here. Gonna hot box the fucking planet.
by smokezilla February 24, 2011
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