the same as a sleepover, but with three people.
can also be called a thrumber party .
and with four, it can be called; a fourpover, five; a fivepover,

and so on.
nicole- "lets have a threepover!!"
taylor&kaylee- "what is that??"
nicole- "a sleepover with three people, duhh"
by ttaylorfaithh June 20, 2009
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