Improv:

Forever.
Point
out
that there is
no
end to it, ever,
and the very young cannot grasp it.
"When you
get to a very high
number, you go back
to one, right?"
But then, neither do us grown-ups:
keep counting, we say -- still more -- again --
and again. Time keeps going --
going on, and on, and on, and on,
and on, and ...