I'm a bit of both, but voted 'other' because you're not the boss of me 
I'm generally shy. I have a ton of defense mechanisms that hinder me getting close to people. Interactions, especially in crowds, drain me. I'm fucking exhausted right now after two days of wedding rehearsal, rehearsal dinner, and the wedding itself.
That said, I can be boisterous with those I trust/feel comfortable with. I also have no problem generally clowning around because it's an act. My humor is on display, sure, but the rest of me, my real self, is protected by the distraction.

I'm generally shy. I have a ton of defense mechanisms that hinder me getting close to people. Interactions, especially in crowds, drain me. I'm fucking exhausted right now after two days of wedding rehearsal, rehearsal dinner, and the wedding itself.
That said, I can be boisterous with those I trust/feel comfortable with. I also have no problem generally clowning around because it's an act. My humor is on display, sure, but the rest of me, my real self, is protected by the distraction.
"I was thirsty for everything, but blood wasn't my style" - Live, "Voodoo Lady"