The History of Mooning:
Slate Article by my new favorite journalist, Forrest Wickman @ Slate
There are many, many examples of mooning gargoyles if you care to do a search. They tend to be a bit more graphic and sometimes with more anatomy than this fellow.
Flyting
From Thor to Twitter: Flyting and the Norse Tradition of Insulting Your Enemies
Whose Mama? Yo Mama!
Must read if you want to dig deeper, The Dozens A History of Rap’s Mama, by Elijah Wald
Great article on mom insulting: Not rated G
Yo mama’s so stupid, she put her watch in the bank to save time.
Anglophenia. Not G rated…so funny!