When I turned 21, my good friend (who had turned 21 some eight months earlier) brought me to her favorite bar at midnight. She ran ahead of me, yelling to the bouncer "Card her!! Card her!!" So he did.
then he got my phone number, and we dated for over a year. Ah, youth.
Happy 21st, hellojed!
My 21st was on a Sunday, too, but a good friend of mine sneaked me into a gay bar that was notoriously lax on carding that Saturday (we'd been going there for a while, really fun place with lots of dancing). I happily presented my ID at midnight:01 and the bartender gave me a free drink.
I got taken home in the hatchback of an RX-7 and still remember the hangover.
And, since you've never had a drink before your legal age (ahem) and it seems you probably didn't have one on your actual B-day, here's where I post warnings on how to not get drunk (in lieu of actual presents):
1. Don't drink out of a shoe, it ruins the shoe and the drink ends up TASTING QUITE FUNKY.
2. Don't drink and drive like my crazy old granddad used to - his beverage of choice was white lightnin' out of a canning jar kept out in the tool shed.