sit down on

sit down on something

to be seated on something. Please sit down on this chair and wait until you are called. I don't want to sit down on this hard bench.
See also: down, on, sit
References in classic literature ?
When you arrived here did you not sit down on the ground?
The landlord forced Marner to take off his coat, and then to sit down on a chair aloof from every one else, in the centre of the circle and in the direct rays of the fire.