Anybody know how to safely discharge a capacitor?

Playing with another small ac unit and they have a capacitor  (110v) about the size of a tennis ball.

I would like to be able to continue doing my vanagon tinkering without losing my eyebrows. 

I believe there are 3 spades on it and its my understanding you can connect a standard light bulb say 60 watt to it and it will 
discharge and then its safe?  no?  

If you dont hear from me again, that was incorrect. (grin)

Doug