Two minutes older, forever ahead
Aaron has been beside me since before either of us existed, technically speaking. He arrived two minutes ahead of me, and he has held those two minutes over my head for thirty-two years — first at everything, he likes to say. First to walk. First to lose a tooth. First to crash Dad's car, though that one he mentions less. Growing up as his twin meant never once being lonely, and never once winning an argument, because he knows my next sentence before I do. But here's what the mirror never showed anyone else: Aaron is the braver half. He said yes to the job across the country, yes to the risk, and yes — fastest of all — to Lucy. Lucy, I've shared everything with this man since the womb. He's the only thing I've ever hated splitting. Take the better half. To Aaron and Lucy!
Why it works: The 'two minutes older' running gag builds to a genuinely selfless handoff only a twin could make.
Customize it: Lead with your real birth-order margin and the one first your twin never lets you forget.