I can never come up with the snappy comeback when I need it. I usually think of it much later.
But there have been a couple of occasions where I did come up with it at exactly the right time.
So tell your stories!
Here are mine:
I was playing in a baseball tournament; my now husband was scorekeeping for us. I was having an awesome day - great plays in the field, great hits. After one such hit, standing on first base, one of the guys - the biggest jokester on the team - hollers at me, 'What did you have for breakfast?' I snapped back with, 'A quickie.' He burst out laughing and my husband turned bright red but was laughing his butt off, too. The first baseman for the other team was laughing, too.
The guy who used to sit in the cube behind me at work was a bit of an odd duck. Anytime I went around to his 'door' to ask him something, he'd quickly minimize whatever was on his screen. One day, I guess I was quiet (so not like me) coming around the corner that he jumped, minimized his screen and told me not to scare him like that. I joked that if he wasn't watching
**** at work, he wouldn't have to worry so much. He blinked a couple times and burst out laughing. This guy was probably the most straightlaced guy I've ever met and would never watch
**** period, let alone at work. Fortunately, he thought it was hilarious.