When a person driving a car with a manual transmission jerks the steering wheel at the exact moment he/she shifts gears, in an attempt to induce wheelspin or "chirp" the tires.
Ol' Bryan took me for a ride in his mustang. It's a 4 cylinder and it won't lay rubber...so he kept trying to janko jerk it.
by MLQ2K1 October 2, 2018
Get the Janko Jerkmug.