The Head-in-a-Jar prank starts by merging three photos of someone into one continuous one. Photo: Dave Samson/The Forum. By Tracy Briggs. October 26, 2016 at 3:55 PM. Share Share this article.

Print on glossy film paper, or head to your local copy center and get a bit of help. My jar was six inches in height, so I created a horizontal image to roll into the jar. Trim around the picture ...

The head-in-a-jar is simple, it's cheap and it's effective: the best kind of Halloween prank. Thanks go out to Instructables and the original reddit thread for posting the walkthrough.

Have you made your own head in a jar? Let us know in the comments and tag @geekandsundry and @justjennrecipes on instagram to show us your creations! image: Mikeasauras via Instructables.