In one shot of the episode Bloody Mary, about 14 minutes into the episode, you can see a "Visitor" from previous episodes to the right side of Randy, when he is talking to Stan. The alien is only visible for around seven seconds. See more...
starring Isaac Hayes, Matt Stone, Trey Parker (add more)
Continuity: At the beginning when Cartman is showing the old women the hippies in the attic, there is a pair of boots and some other things behind them. It does two shots that show the things behind them, then in the last shot before they leave the attic, all the things are gone.
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