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2.
Used to define the event in which groups of girlfriends get together and masturbate, usually under covers or in a hot tub, accompanied by lots of giggling.
ohhh my god, did you hear about the Junior girls and their Sparkle Party?? Yeah, they just get together and twang it at Sarah's house, so fucking weird!!!
by DL28 December 13, 2010
 
1.
A sparkle party is full of lots of hardcore things, like party pants, dancey dance, sparkles and the like. The music playing at said party will probably be a techno-dance blend. Classical pianists are known for their secret love for dance music.

see also: German Sparkle Party
"I had such a kickass time at that Sparkle Party last night. Glad I wore my rubber boots and party pants for dancey dance!"
"Oh my god, heck yeah! i can't get the sparkles out of my hair or off my skin... I think i might see if i can permanently embed them into my flesh."
by Princess Shparkle Party October 07, 2011