1. Peanut butter used to come in slices.
Apparently in 2008, peanut butter was sold in slices, similar to Kraft singles. In the comments, Reddit users reminisced about purple ketchup, Goobers (peanut butter and jelly in one bottle), black water and other failed kids' food marketing.
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Social media junkies that we are, we spent a lot of time on Reddit this year. Sometimes we found big stories, like the decryption of the mysterious subway code. Sometimes we found amazing photos, like this candid wedding proposal captured in an Austin park. And sometimes, we just learned some fascinating factoids.
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We've collected our favorites from a year of digging through comment threads and verifying sources. Check out our top 20 above, and as always, share your picks in our comments section below.
Thumbnail image courtesy of joshdickdotnet, deviantART.
This story originally published on Mashable here.