Do you always take a receipt when buying something?

Usually don't if there is an option...

Only excepts are gas stations (habit) and when you have to order food, then pay up front, then walk to the back again to pick it up... because if you don't have the receipt, then how do they know what you paid for when you walk back out again?

Always.

No. This question reminded me of a Mitch Hedberg joke.

No. I'm not a Karen.

Yes