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A judgemental phrase used to describe a group of women (around 4-12 of them) who post pictures of themselves together on Instagram, particularly if they are dressed revealingly, or posing with alcohol.
man one: hey bro, your sister posted a picture of her slut convention on instagram last night, they really should cover up...

man two: *sigh* I just wish they wouldn't invite chad round with them...
by Supreme Theory January 03, 2018
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