Shitting your head out of your ass could refer to three things, either;
A, being so mad your head jets out of your ass;
B, wasting your
time trying to shit your head out of your ass;
C, an incredible feat, such as lifting a
car, watching a whole episode of Everybody Loves
Raymond and laughing at it atleast twice, or beating up Chuck Norris.
A, "If I have to sit next to that bitch named Sophie AGAIN this year, I'm totally going to shit my head out of
my ass.."
B, "
World of Warcraft is like trying to shit your head out of your ass,"
and C, "Dude! What are you doing?!"
Dude- " I'm trying to make a myspace video of me shitting my head out
my ass!"
"Shitting your head out of your ass?!"
Dude- "Shitting your head out of your ass."