1. (n)when you're at your boyfriend/girlfriend's house and you're making out (or anything else...) all day. A response when a nosy person asks you what you did. You respond "moday". It is the truth without going into too much detail for your boyfriend/girlfriend's liking.
2. (n)abbreviation for "make-out-day"
Guy1: What'd u do at her house, dude?
Guy2: Oh, nothing much. Just another moday.
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.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"