Watch the episode where there is a new bully in the school who wont give Lisa a rest. At the part where Lisa asks the old school bullies for help and shows them her 'Indian Burns' on her arms, there are 4 stripes. The beanie guy (I can't remember his name) says "Wow, triple twist!" while looking at her arm. The screen shows 3 burns. Then in the next scene, it shows 4 again. The next scene points away from her, then flips back and shows 3 again. 5 seconds later, Nelson starts walking with Lisa, no more 'Indian Burns'!