Green’s Dictionary of Slang

a phr. meaning sit down, thus squatty-vooed, seated.

1890		Music Hall & Theatre Rev. 5 July 7/2: I found myelf squatty voo’d in between some country josser / And a bald-headed [...] old konosser.
1899		Kipling ‘A Little Prep’ in Complete Stalky & Co. 194: Be quick, you ass!... Squattez-vous on the floor, then!
1900		Marvel XIV:343 June 16: Sit down, squatty voo, gentle reader.
1909		J. Ware Passing Eng. of the Victorian Era 257/2: Voulez-vous squatty-vous? (Theatre gods’). Will you sit down? One of the half French nonsense phrases which began with the frequency of French emigres and prisoners in England: Started by Grimaldi.
1916		G. Jennings Poached Eggs and Pearls (1917) 14: Squattez vous, George.
1923		Smith’s Wkly (Sydney) 2 June 21/1: [H]e slapped nie playfully on the shoulder, and bade me squatty-voo.
1929		Dundee Courier 19 June 4/2: How’s the old Regent Palace? Squattez-vous and tell me all about it.
1934		J. Franklyn This Gutter Life 166: ‘Squattez vous, Pringle!’ said Gerrard.
1938		Hawick News 28 Oct. 7/3: ‘Squattez-vous’ invited Mr Frost genially.
1985		Ithaca Jrnl (NY) 19 Mar. 5/1: She told her class to ‘squattez-vous’.