Question

Three brothers share a family sport:
A non-stop marathon
The oldest one is fat and short,
And trudges slowly on.
The middle brother's tall and slim,
And keeps a steady pace.
The youngest runs just like the wind,
Speeding through the race.
"He's young in years, we let him run,"
The other brothers say
"'Cause though he's surely number one,
He's second, in a way."
How and who are the three Brothers

Answer 1

The hands on a clock (hour, minute, and second).

Answer 2

Eldest brother and twins take part in the marathon . The twin brother born last was leading the race. But scientifically the twin brother born first is the youngest. Hence the twin brother born last, though leading the race is second in a way.