Tic
A tic is a sudden, repetitive, nonrhythmic motor movement or vocalization involving discrete muscle groups. Tics can be invisible to the observer, such as abdominal tensing or toe crunching. Common motor and phonic tics are, respectively, eye blinking and throat clearing.
ATK motorcycles
The Intimidator is a monster dirt-bike powered by a Maico two-stroke engine. As of June 2008, only Maico itself has a machine comparable to this because the Intimidator is the same bike with different badging.
ATK also has a line of atvs that use a 900cc efi engine.