In fantasy sports, most commonly fantasy football, a condition where the owner is so happy with their team right after the draft that they already have a place picked out for the trophy. A false sense of euphoria which is usually followed by a last place finish and ridicule from others who remember what a moron you looked like on draft day.
1. Mo had a serious case of drafterglow. I mean he did get Tomlinson, but the rest of his team is a disaster!