Hey all, I'm having some serious problems trying to locate a specific part of an episode of The Simpsons.
It features Barney Gumble passed out somewhere with a plastic bag floating around him. As he is snoring, he inhales it and upon exhaling the plastic bag pops out like bubbles out of his nostrils and maybe ears too.

Both my friend and I have been looking for soooo long and would really appreciate any help anyone could provide.

:)