Sherlock's Asshole
When you put pipe tobacco between your butt cheeks, you rub it well by performing twerks and then you fart inside a friend's pipe's bowl so that you stack the tobacco inside, ready to be smoked and enjoyed.
I went to Bob's house yesterday. He kindly offered to give me a Sherlock's Asshole, so we sat by the fireplace, drank some whisky and smoked our pipes. It was a great night!