The multi-jump glitch is a jumping technique that allows users to jump higher. When gears are within a player's backpack , the user can press the number key associated with that gear while holding the space bar in order to jump multiple times in a row. It can also be done with the use of user-created gears and motorcycle gears. This glitch can sometimes benefit the users by the use of double jumping.
The multi-jump glitch can also occur when the player jumps onto a small unanchored object, causing the player to launch into the air. Wearing multiple hats and dropping them with "=" can also trigger this glitch. This glitch has been patched early 2015
The multi-jump glitch is most used in games that you're jailed or escape quickly. For example Prison Life.