You approached someone and ask him if you can use his kaho, telling him you never steal because you're a GM. Here's where you failed:
1) A GM never need to ask someone to borrow a gear.
2) GM's never speak with bad grammar.
You said you were just joking around but I highly doubt that. I'm pretty sure your intention was to steal his kaho by impersonating a GM. Free ban hammer for you.
Just make a new account and start fresh. You're lucky GM didn't ban your IP.