Im not really ashamed because we all make mistakes, but then theres people who don't put enough effort into writing properly and use stupid abbreviations of things like "lol", "tbh", "gtg" to name a few things. It just really annoys me.
"It's a Japan thing. Apparently, it's from anime. Senpai means someone you're suppose to look up to. (in this case a senior or a teacher if you're thinking of that chick from Misao who liked her teacher.) All in all 'Notice Me Senpai' means you want someone older than you to like you." -urban dictionary
(Sin+Pi)