[cynicalsecurity]

There is no age limit.

[dvh]

There is, 127 years (nearest round number from maximal human lifespan)

[matt3210]

Appropriate given age starts at 0

[greenbit]

Drat, I forgot to wish my son "happy zeroeth birthday" when he was born.

[dickstrawng]

when he came out of the big O you forgot to make a notation?