This Ramp Glitch/Exploit in Fortnite let’s you gain a bit of extra speed while you build ramps. This weird building glitch doesn’t really do much and is impractical in most situations, but maybe there is some creative use for it.
To reproduce this boost glitch, go into the building mode and choose the ramp. Now face down until you can step into the ramp press jump+build almost at the same time while running. If you do this while a part of your body is standing inside the ramp blueprint you will be pushed away from the ramp gaining a bit of extra speed.