ケツワープ
A glitch in [[Super Mario 64]] that exploits the lack of a backwards speed limit while long jumping (shortened to BLJ). Popularized by [[speedrunning (topic)|speedrunners]], the glitch is most famously seen being used to bypass the endless [[stairs]] leading to the final battle against [[Bowser]].

In Japan, this is known simply as the Ass Warp.
backwards long jump