Quote from Lorelai in Twenty-One is the Loneliest Number
Lorelai: We had plans. Luke: [groans] What? Lorelai: We were gonna go to Atlantic City. We were gonna sit at a blackjack table at 11:59, we were gonna order martinis, and we were gonna be playing 21 when she turned 21. And then hopefully we'd win, and we'd take our winnings and we'd buy 21 things. And then there was a thing about 21 guys that wouldn't really be appropriate anymore since the engagement, but... it was a good plan. She probably doesn't even remember the plan. Luke: She remembers the plan. Lorelai: It wasn't like we talked about it every day. It was just something we thought of. Luke: She remembers the plan.