push-button
adj.— «Jockeys like to call horses like Big Brown “push button”—they respond to commands instantly and easily.» —“Preakness laugher leaves Big Brown in line for glory” by Pat Forde ESPN.com May 18, 2008. (source: Double-Tongued Dictionary)
Further reading
A Montana farmer says his dad used to warn against catching the epizooty. In 1872, an epizootic respiratory disease among horses nearly brought the United States to a standstill. The word epizootic is modeled on the Greek word epidemic, from Greek...
The edge of the Grand Canyon. A remote mountaintop. A medieval cathedral. Some places are so mystical you feel like you’re close to another dimension of space and time. There’s a term for such locales: thin places. And: did you ever go...