The rules of TSA are fairly simple. Leave your water bottles at home (you can buy a $15 Dasani at the gate), if you bring a big tube of sunscreen, you will be suspected of terrorism, and for the love of God, leave your guns, box cutters and hatchets at home.

But even with these crystal clear guidelines, several fliers still failed to get the memo about what (literally) does and does not fly in the eyes of airport security staffers.

From a weed-filled tub of peanut butter to an Eric Andre-sized bottle of ranch dressing, here are 20 items travelers actually attempted to sneak onto their flights.