A classic line to woo a woman, meaning that you would do whatever it takes to be close to her.
John saw her from across the room, she was beautiful, he wanted to know her. He downed a vodka and coke and casually made his way over to the bar to order another. "Voda and coke please" he said to the barman. He took a silent but deep breath. "I've been watching you all evening and I would eat a mile of your shit to smell your farts." She smiled, and said "come on then lets go to the bathroom"