the tip of a protruding anus
"that fool Donald Trump's skyurn gets me hot" - Cooljerk
by Mike McChickenpotpie March 10, 2004
1 more definition
an exclamitory term expressing the greatness of a particular insult.
"Your mama's so fat, when she sits around the house, she sits AROUND the house." "Damn, skyurn."
by Cooljerk November 10, 2003