assume the position
Definitionvagina penetration from the rear. Synonym: spread eagle.
(1) John Buckner (Kieffer Sutherland) to Huey Walker (Dennis Hopper) in Flashback (1989):
-- John: 'Assume the position.'
-- Huey: 'Which one did you have in mind? '
(2) Mac (Gene Hackman) to Reva (Nancy Travis) in Loose Cannons (1990):
-- Mac: ' Assume the position.'
-- Reva: 'This is the position you meant, right? I watch American TV. At least you didn't say spread 'em.'
3. BDSMers assume the position to paddle the buttocks.