Slut Convention

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...