Proof that simple minded people can be convinced to sing and dance to songs in languages they can't understand. This can also be seen in the 2001 Simpsons episode: "New Kids on the Blecch" where the town of Springfield is brainwashed into singing 'Yvan eht Nioj' which is a subliminal recruiting message to "Join the Navy".
Bart: Horsetrot dances to "gangnam style"
Nelson:....................HA HA!
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