Short for unisex party. Meaning that the party includes all genders.
"Hey, are you coming to her uni party later?"
"I was thinking for my birthday, I want to have a uni party."
When girls put on their prom dresses and get drunk just for the fun of it.
"Let's have a princess party for my 21st birthday!"
Drive around while drunk (designated driver of course) and bump music and have lots of girls in the car wit you and just be hella wild!
Last night was crazy bro, Car Party! We drove around like six hours from Seattle to WC to Des Moines drunk just being hella wild! >=)
This is a girl who is ready to party hard anytime, anywhere. She knows where the parties are at, how fun they'll be, and whether or not hot guys will be attending. She always has something cute to wear and has a big smile to match. She wants everyone to have fun, so she'll sneak a crowd into a closed party if she has to. If the party sucks, you can bet she'll have a good time anyway. Shots, shots, shots. Chug, chug, chug. She goes hard and gets totes belig.
Gene: "Hey, what are you guys doing tonight?"
Shelby: "Meh I don't know, ask the Party Cat!"
Similar to a yard sale, a Party Yard Sale is a situation in which someone loses all of his or her possessions (phone, wallet, iPod, etc.) over the course of a night.
"Dude can I get your number again? I had to get a new phone after my party yard sale last weekend."
Last one up, that can't fall asleep due to excitement from socializing. Being hushed only encourages uncontrollable laughter.
Can Also Be: Phenomenon when you are still awake and uncontrollably laughing in a social situation where you're supposed to be asleep.
Same as: SlumberParty Syndrome
Blue was suffering from slumber party syndrome as she couldn't stop uncontrollably laughing hyena style, as everyone else is passed the fuck out.