Jiang Cheng has been told that anal sex is a great; however, he doesn't know quite how to go about doing that. Nie Huaisang, dutiful as always in his role as best friend, helps him figure it out. (And then helps him figure out something else, too.)

Having a crush on your roommate is really embarrassing, except that's apparently the opposite of a problem. Jiang Cheng can't deny that's pretty convenient. Wei Ying holds it up, a series of straps and buckles and velcro and wow, really a lot of leather. It has absolutely no conceivable form beyond tangled. Nie Huaisang opens the door at exactly the moment that Wei Ying holds the thing up to Jiang Cheng’s chest, as if he’s trying to imagine how exactly it would fit onto a person, and it falls into a tangled pile between them while they stare at Huaisang in mild mortification.