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The Simpsons, a show that consistently manages to keep on giving.
Even after all these years and having seen countless repeats, there's always one more gag that you never quite noticed before. A show that even in its 27th year can still easily blend together slapstick and toilet humour with wry political commentary and be as relevant as ever.
Check out these hilarious signs that have popped up in the background over the decades, jokes that aren't even the focal point of an episode (or even a scene) and yet still manage to be crafted with laugh-out-loud impact..
Related: 13 times when real life totally ripped off The Simpsons
