Wiktionary
sitting on it
vb. (present participle of sit on it English)
Usage examples of "sitting on it".
In the course of thirteen years they had worn that boulder tolerably smooth, sitting on it.
Trent said, pulling a chair out from the table and sitting on it backward in front of the two little ones.
She had not concealed the ring by sitting on it, and it was not anywhere about the chair.
Inos had folded her bedding into a thick bundle and was sitting on it, pouting at the ratholes in the wainscoting opposite, while Azak was leaning back against the wall, legs straight.
Irreverently he wondered if the Thek was sitting on it, had ingested it, or perhaps created a heat-resistant pouch in which it could keep bits and pieces of fragile alien manufacture.