tip of the hat
A sarcastic homage to someone who does something stupid or careless.
Tip of the hat to microsoft for making DX10 only run on Vista.
Tip of the Pope's Hat
When your anus is preparing to shit and you ever so slightly begin crowning the turd head.
A magnificent log was percolating while I sat on the throne. Suddenly the Tip of the Pope's Hat had breached my rectum.