A song by Limerick-based band Rusty Trombone and The Fanny Farts, describing a man's desire for anal sex.
"Hey look over there!"
-"That's the guy from Rusty Trombone and the Fanny Farts"
"Hey Rusty! Will you sing Cadbury Lane for us?"
The anal passage. As faeces are generally brown (like Cadbury chocolate), this term allows one to make reference to the rectum in a somewhat polite way.
A homosexuals favourtime pastime is to take a nice stroll down Cadbury Lane.