Does this milk smell off to you?
If the "pull my finger" jokes are wearing thin, simply fart into a half-full plastic milk carton, seal swiftly, then present to the nose of your victim, saying - "Does this milk smell off to you?"
This is a kind of snaf-tache lite, for people unwilling to put their fingers into their anus for a joke.
written by Cl*ck*ork C*w, approved by Log