Jeez, how stuck up is this forum? He's not blowing his own trumpet at all, I think you're just entitled.
I've never taken a test in my life, I just play piano for fun. But am I not playing piano? I probably know how to play 5-10 classical pieces properly, and I'm in the middle of learning how to play Clair de Lune right now. Yet, I don't know what is on any test, nor do I care. I never plan to take one, and that's perfectly fine with me. I don't play the piano for anyone, I do it for myself because it's fun.
I find it sad that you're scoffing at someone because they can't play as well as you. And to accuse them of blowing their own horn is even worse. I agree with the poster above me. It's about how well you can play. If you can play Twinkle Twinkle Little Star, you can play the piano. No need for a condescending "lol". On another note, your username is contradictory of your post, Mr. pianoplayer51. In fact, you're contradicting yourself in the post, "I can play the piano to an extent but I would not say I can play a piano". So you can play the piano to an extent, but you can't play a piano? I'm not sure that makes much sense.