When someone is new to a game and gets really good RNG, so they think it's all skill not luck.
Especially big in singleplayer games since no one is there to trash talk.
Person 1: "Jim just got to gold rank yet he just started playing last week"
Person 2: "Have you seen the way he plays? All luck, no skill. Bet he's feeling "I'm So Good-itis" right now.
When you think you're so skilled, but in reality it's your teammates/characters that are doing all the heavy lifting. Resorting in you falling behind.
Josh: "wow I thought this game was supposed to be hard, I've cleared 11 stages already! I'm the best at this game". In reality Josh pulled a 5 star hero early on.
Josh was later on team wiped on stage 15, for disregarding lobby upgrades, and for not paying attention to his hero's needs/upgrades; Thus he has I'm so good syndrome.
another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.