One day ooold Aunt Al was sitting on her tuffet and noticed one brother
leaving his twin and travelling at c/3.
One day the twin returns and Miraculously is younger than the twin who
remained.
Aunt Al still sitting on her tuffet then Heckled: "1) Hey stooopid -
you didn't mention where the inertial reference frame?"
It's the one who's not accelerating away Aunt Al, the one who's not
accelerating away.
"Noooo......." says Aunt Al, "and where's my constipation medication!"
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