Hop (Mario Kart)
From the Super Mario Wiki
Hopping (referred to as Mini-Jump in Mario Kart: Super Circuit) is an ability exclusive to Karts used in all of the Mario Kart series with the exception of Mario Kart: Double Dash!!. Drivers can use this to their advantage, as it chains to a Drift and Hops over small gaps. All drivers can use the Hop by pressing R and hopping in Mario Kart 64 can allow players to gain access to shortcuts.
In Super Mario Kart, both the L and R Buttons are used to hop. Hopping in Mario Kart Wii only works with the Drift option set to Manual, and can also be used to protect the driver from the effects of a POW Block. Hopping off of a ramp (pressing ) on Mario Kart 7 allows the player to perform a trick, which will give a small boost upon landing. Hopping reappears in Mario Kart 8, and it functions the same way it does in previous games.