A cupcake Convention is basically like a group of predators. The cupcake Is a reference to when EDP445 when he went to go get a cupcake. This joke was used by Ryth when a user on YouTube went to a "Genshin impact" concert. The thing is that A cupcake convention is a group of predators who likes a bunch of minors
Alternatively a cupcake convention would be a convention only for predators. Who likes things with girls in it. (Minecraft, Genshin impact, Honkai star rai: impact
Friend 1: bro I made some cupcakes today
Friend 2: Dude make sure the Cupcake Convention doesn't find out
Friend 3: ong bro