In reference to a blumkin, an I'll do anything is when she is actually the one taking the shit and you're the desperate perve willing to eat her out on the toilet. It works better and feels better for her if terds are actually plopping while your flopping your slimy little orgasim giver. Hence the term I'll do anything to make her happy.

when you're hungover as shit after a spending a night drunk as a skunk