BOTTOM (as Pyramus): O kiss me through the hole of this vile wall.
FLUTE (as Thisbe): I kiss the wall’s hole, not your lips at all.
– William Shakespeare
A Midsummer Night’s Dream, Act 5, Scene 1. When Pyramus asks Thisbe to kiss him through the hole in the Wall, Thisbe replies with a line that has sexual innuendo. "Wall’s hole" is suggestive of anus.