Honestly this would be better without the Iinchou. The rest of the set up of the bullied girl trying to act like a rough delinquent to look tough and failing is funny enough on its own. The Iinchou shit isn't really funny at all in comparison.
I tried piercing my own ear once with a safety pin. I wouldn't recommend it. I ended up doing it lop sided so you could see the back of the earring while looking at it face on. I took it out after a week.