Bag of Farts Candy is a small biz specializing in, well, the obvious. 

Promising review: “I won’t lie, the whole reason I purchased this is because I knew that my kids would laugh at the name. However, I was really happy with how yummy the actual cotton candy in the bag was! The candy was fresh, and well packaged, and the product name got the laughs expected. Overall, I would say it’s a bit expensive for what you get (though it was easily enough for me and two children to share), but would still recommend as a cute/silly gift for someone who would get a kick out of this type of thing.” —Deb

Get it from Amazon for $8.95.

Shipping info: Available on Amazon Prime with two-day shipping, non-Prime shipping options will still arrive by Christmas (see Amazon’s full shipping information here).

Source: https://www.buzzfeed.com/elizabethlilly/poop-joke-gifts-adults