The growing of teeth.

Here’s Dave, and Dave I know you are in pain,

Because you mention it in your own way again and again.

I’m sorry I can’t help you more than I can,

But I’ve given you all the painkiller doses permitted by man.

There’s a way, evolutionary, for complete pain relief,

But you’d have looked odd born with a full set of teeth.

When you’re in discomfort Dave, just let me know,

5 down already! just 15 to go!