We have such unlovely terms to describe our bodies. How good can you feel about yourself if you use those expressions to define parts of your own body? Not very. I think we're going too far with personal insults we aim at ourselves.
The music teacher found out that I played piano and asked me to play in front of the class. In a panic, I chose the most masculine piece I could think of -- the Marine's Hymn. Apparently, it wasn't butch enough.