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"Backwards Long Jump". Referred to the glitch in Super Mario 64, where if you repeatedly long jump backwards up a slope / set of stairs, you will accelerate extremely fast—so fast that you break through walls, including invisible ones.

One of the most awesome glitches in the game.
Guy 1: Did you see that 0-star TAS that SwordlessLink and AKA made?

Guy 2: Yeah, the most awesome use of BLJ I've ever seen.
by XFi6 June 21, 2008
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