sit-upon

Nor I can't send you out to s'arch for your sister, wi 'the knowledge that it'll surely end in her warmin' your little sit-upon ....

Nicky-Nan, Reservist Arthur Thomas Quiller-Couch 1903

Which was indeed true, he having been the first to teach us _pisali_, meaning a saddle, and in which Professor Cowell, of Cambridge, promptly detected the Sanskrit for sit-upon, the same double meaning also existing in

The Gypsies Charles Godfrey Leland 1863

And likely, on your ... ahem, sit-upon, as it were.

The Seattle Times 2010

And likely, on your ... ahem, sit-upon, as it were.

The Seattle Times 2010

He continued, "Let me see it;" so she stood up before him and pointing to her parts, said, "This which faceth thee is my coynte whereof thou art owner;" after which she raised her backside and bowing her head groundwards showed the nether end of her slit between the two swelling cheeks of her sit-upon, her scat of honour, crying, "Look thou! this be the Coynte of my mother; but, O my lord, 'tis my wish that we wed it unto some good man and pleasant who is faithful and true and not likely treason to do, for that the Coynte of my mother must abide by me and whoso shall intermarry therewith I also must bow down to him whilst he shall have his will thereof."

Arabian nights. English Anonymous 1855