When hang gliding, parasailing, or other aircraft, the updraft of airflow from a hill or weather phenomena is sometimes referred to as Otis. Because of the elevator company by the name Otis, updrafts are called otis due to the fact they can give the hang glier etc. a ride up.
Otis is typically very small and usually has a small willy. Normally has a relative called mike with a shiny forehead. Very annoying but can be funny at times. Liked by most.