When people win me in a competition they have good memories But I'm most well known to measure the size of mammaries

On the face of it. I'm only wasted, if no fun was had. It doesn't take Einstein to understand that.

I’m no horse of course, though I’m often confused, I carry your burdens and still get accused. My voice is a laugh, my ears steal the show, I’m smarter than people are willing to know.

My first four are a type of injury that generally occurs with heat, fire, or friction. My last three are the opposite of in. Together, I’m either a fancy car trick or an occupational hazard.

Clad in white, an orator of folly. What guides the flock, but still a sheep?