Limerick

a  dentist   who  practiced  in  Neath

decided  to  make  some  false  teeth

but   he  didn't  understand

the  instructions  at  hand

so  the  top  set  now  sit  underneath

There once was a dentist in Spain 

Who used to say no pain no gain

When he pulled out your teeth

They would hear you in Greece

I think Hannable was his name