In the episode with Sherry Bobbins, watch at the part when Sherry and Barney are signing "Wasted Away In Margaritaville".

One second you see Barney, Sherry (without her jacket) and lots of junk on the floor, the next second you see the Simpsons saying they should help her or something like that, and the next you see Marge on the couch, Sherry (WITH her jacket and hair cleaned up) and both Barney and all the junk are gone.