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.