Regional variation on "Take a flying fuck at a rolling doughnut." Used to tell someone to fuck off or scram.
Quit bothering me! Go stick your dick in a tagine, why don't you?
When two people arrive, independent of one another, at the same number of cigarettes (or other items) in their own respective packs at the same time.
"Given the way you're chain smoking, Bob, I think we'll reach a PackPoint by the end of the night."