Water goes up and comes back down -- can't explain that.
This is a video of a guy who built a functional version of M.C. Escher's iconic eye-bending waterfall. Don't ask me how it works, but I suspect it has something to do with a carefully designed optical illusion (like this one). That or black magic. I'm leaning towards black magic. Also, against the wall. HIYO -- drinkin' before eleven!
Hit the jump and be amazed. AMAZSHED I SHAY!!!!!!!!11 And spray.
Thanks to Closet Nerd, who built a waterfall that can do the same thing except with ice cubes. Just kidding, he does fill his bong with them though.