At the potluck, I brought two dishes: knowledge and mashed potatoes and gravy. Guess which one got cleaned out and which one hardly got touched.

I make my own luck, and I make it in a pot. Then I bring it to potlucks.

To the potluck I brought something I randomly found in my fridge. It was the source of the stink.

I went to a potluck. I brought my own pot—and luck. The pot was empty, just like my promise to bring food the next time.