the most inappropriate thing you've ever said/heard

[Pokertastic]

A couple years ago my mom and I were going through a Walmart checkout. As the middle aged cashier was scanning the items she asked my mom, "Would you like to make a donation for the Sick Kids Foundation?" Before my mom could reply I blurt out, "No, we hate sick kids." My mom looks at me with her mouth open, in complete disbelief of what I just said. I got the coldest look from the cashier but my mom and I cracked up laughing.