This first picture is a well-known sculpture in downtown Los Angeles. It's called Corporate Head by Terry Allen.
The first picture came from here. I found the 2nd, 3rd and 4th pictures via This Isn't Happiness and the last one came from here.
ADDENDUM: (grabbed from this YouTuba video which was previously referenced in this MM post.)
ADDENDUM TOO: (Thanks to Mr. Fessler-Bestertester)
According to Don Martin the sound of a tuba landing on a person is "onk" but, alas, that word isn't included in the Don Martin Dictionary.
Another MM Tuba Post.
Reflections In A Sousaphone Picture at Mixed Messages
April 14, 2010 - couldn't resist adding this picture which I took earlier today.
Head Tags: head. . . headless. . . Corporate Head. . . Terry Allen. . . tuba