The one time I recall was amidst another bit of continuity winking. Lisa manages to kill off her black cat Snowball II . . . and his three (four?) replacements. As the episode closes she finds an exact duplicate, saying something along the lines of “I’ll call you Snowball II just to put this behind us!” Skinner walks by, says something like “That’s awfully convenient!” Lisa’s snide response references Tamzarian, to get him to shut up.
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