Wild Barts Can't Be Broken - S10-E11
Corrected entry: When the kids are broadcasting townspeople's secrets, and everyone else is in the meeting, Lisa says "And guess who's been practising medicine without a licence?" - scene cut, then cut back to the sign - "That's right: Homer Simpson" immediately afterwards, "D'OH!" is heard. The kids are OBVIOUSLY at least 1.5 miles from The Town hall, so there should have been a sound delay in between Lisa's last statement and hearing Homer's voice.
Correction: Neither can you hear someone yelling when you're one and a half miles away from them, but that happens all the time in cartoons- the cartoon makers are using artistic license.
Blibbetyblip