1 definition by R0b0Squid

When you lie on your side on the edge of your bed and ejaculate off the bed onto the floor.
Me: Dude, Kya gave me the most spectacular handjob last night.
Zac: Finally.
Me: Yeah, I even pulled off a Horizontal Waterfall!
Zac: That's awesome dude!
by R0b0Squid October 11, 2015
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