Senescence

That awkward moment someone at a cafe asks if the teenage boy in line for coffee is your son —

— and your first thought is, "What!? No. I'm not old enough to be a dad!"

Dang. I *am* old enough to be a dad. How did *that* happen? O_O

*Senescence (wikipedia )

For clarity: senescence is the biological word for growing old. I'm not ready to talk about it.