Gay Slumber Party- n. The act of getting together with a group of your closest male friends and spending the night together. Common activities include teabagging, pwnage, sleeping bag fights, and touching your energy sword.
Note: a 'gay slumber party' should not be confused with a 'gay sleepover party', the principal difference being the latter involves sleeping.
Brian: ughh! brazil's loss destroyed me as well. still recovering... yo guys. lets time our naperville window together. i need to get my gsp fix on!