What was the last thing you were doing when you were having a good time?

I was having a ball. Get it? 

"Don't stop me now, I'm having such a good time, I'm having a ball". 

The good times roll on, too many to recount. but there was this one time...

Mrs Didge is a much better swimmer than me and when we went to the beach she usually kept me company when we went far out -- anything from 500 metres from shore, and upward. One day when we were swimming back to the beach she trod water every so often, waiting for me to catch up. We had covered most of the distance and she was waiting one last time when I looked over my shoulder and saw a whopping great wave just starting to break. I picked up the pace, picked up the wave, and shot past her like a barracuda passing a jellyfish. Now that's what I call fun. 

I went to an amazing exhibition at the museum. Ron Muek's hyper-realistic art! 

Closing my eyes and sighing;))

Having great, passionate sex!

Listening to a seven-year-old read Pinocchio a few hours ago. 

I can have fun in just about any circumstance.

Talking on the phone to my bestest friend and enjoying that time with him!

I can't remember. I was probably stoned.

Probably hanging out with my friends. And no, I was not drinking. Sometimes just talking to them can constitute a "good time". 

Answering your question now while listening to The Mamas and The Papas.
:)