And at the wyndow out she putte hir hole,
And Absolon, hym fil no bet ne wers,
But with his mouth he kiste hir naked ers
Ful savourly, er he were war of this.

– Geoffrey Chaucer

The Canterbury Tales, The Miller’s Tale. It’s the ultimate humiliation for Absolon. In the black of night he leans up to kiss Alison’s lips. However, it’s not her lips he kisses, but her naked behind, as she sticks her read end out the window to him in a malicious prank.