I suck at Spanish

Yesterday, our Spanish teacher passed out a sheet of paper with everyone's name on it. On that day, we were doing advertisements/commercials in Spanish on our chosen product (Coke, McDonald's...) And some people have already filled out "orange juice", "Cheese", "Plates." So naturally, I wrote down "shampoo."

Later on in the middle of the class, my teacher came up to me and said "Jenny, this is a list for the picnic we're going to have on Friday. Um, I don't think we need shampoo, can you bring napkins instead?"