It is unclear how old OP is, but I don't get why he didn't just stay at home, since he knew he would be tempted by the food. When I had a serious reason not to go somewhere, I never let my parents drag me there.

You should of ordered the most expensive stuff on the menu and made him pay for it, he might be less likely to screw around with you in the future

You were a moron to go.

When I had my colonoscopies I've had to take a "golytely" drink. tastes like shit and makes you shit. You wouldn't get a chance to see the food with how much you would be in the bathroom with that stuff.

Just walk out..

cruel.

Well, at least your dad has a sense of humor. Hopefully after your colonoscopy you can indulge.

Awe what a jerk! Get him back for that OP :)

my dad just had a colonoscopy. the day before we weren't allowed to eat in front of him. poor guy. your dad is an ass

Sometimes family members can be such assholes (no pun intended).