Jack and Danny
noun
1
the buttocks, the anus. Rhyming slang for FANNY, formed from characters played by Jack Nicholson and Danny Lloyd in the Stanley Kubrick film, The Shining, 1980 UK, 1992.
2
the vagina. Rhyming slang for FANNY (the vagina) UK, 2000.
3
a story, lies. Rhyming slang for FANNY UK, 2000