Riddle

I am free the first time and second time, but the third time is going to cost you money. What am I?

Choose an answer

A.A haircut
B.A visit
C.A phone call
D.Teeth
Hint: It's a word with 5 letters, starting with "T".

Answer

Teeth

Why this is the answer

People get two sets of teeth naturally at no cost -- baby teeth, then adult teeth -- but further dental work, like removing troublesome wisdom teeth, will cost you money at the dentist.

This riddle is filed under "What Am I?" Riddles and rated Hard.