A splashy john is when there is a puddle of pee/water/god-knows-what under a urinal from the previous users of the urinal. A splashy john is especially disgusting if you are at a pool or a place where you are not wearing shoes. One way to avoid the puddle on a splashy john is to spread your legs so your feet are on either side of the puddle instead of taking a leak with your legs together which would mean that both your feet would be in the puddle.
"Timmy did you use the bathroom?"
"Fuck naw mommy! I got a splashy john!"
by poopy butt January 21, 2015
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