What is Jelly John?
1.
A clever turn on a classic prank. The original prank calls for putting plastic wrap over a toliet bowl so when someone goes to pee, it splashes back. The jelly john, furthers this, instead of using plastic wrap, you fill the toliet bowl with a layer of clear gelatin thus making the prank harder to detect an much harder to deal with.
It can be used as either a noun, or a verb.
Lester was pissed off at his room mate, so he gave him the ol' jelly john.
Pete's jeans were all wet around the knees because someone jelly johned his toliet.
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