Mono In A Bottle - A drink consisting of Orange Fanta, Mellow Yellow sodaa, Coke, four Pixie Stix, and one red starburst. You mix them all together in a bottle, shake it up, and pass it around so everyone gets a sip. It's a trust or a friendship thing. You only play with people you trust so you don't get sick.
Person 1 - Hey, let's all make some MIAB!
Person 2 - Okay! Hey, everyone! Let's make some MIAB!
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.