1) An arduous and contemptable situation or subject.
2) A festival attended by people of sub-par intelligence in which they fling feces at each other.
1) "Ah man, this class is so confusing, what a shitflingerfest."
2)"Is Mike home?"
"No, he went to the shitflingerfest with the Andersons from down the street, he should be back around dinner."