Once upon a time, you were invited to a gathering where food was served by the host... except that the food wasn't just "meh, I could do better", it was worse. What was it, and were you able to keep a straight face?
For me, my most memorable experience was when my parents-in-law invited us over for assemble-your-own fajitas. The look on my brother-in-law's face when his mom brought out her version of guacamole was priceless: mashed overripe avocado and soft-boiled egg. My husband, normally someone who keeps his ruder thoughts to himself, blurted out, "Holy s***, that looks like zombie brains!"