Middleton Milkshake 

A "sexual" act which begins with a lady defecating into a glass of freshly collected breastmilk. This mixture is then stirred with a penis and used as lubricant for penetration. The mixture is usually simultaneously poured onto the partner's head and chest

I doubt very seriously that Dairy Queen will consider offering Middleton Milkshakes.

Middleton Milkshake by Ohio Stanley January 21, 2009