Your big sis Nina needs a favor from you -your mom has been pressuring her to shave her armpits, but Nina doesn't think she should have to. Now you're here to settle the score - all you have to do is take a big long deep sniff of Nina's armpits so you can say that they smell fine. You can do that for your big sister, right? After all, you do owe her - so before too long you're face first in your sister's armpits, huffing voraciously. To your dismay, you can't hide how turned on you are by having your face buried in her pits, by the smell, the sweat beading against your skin, and Nina notices quickly and decides to take advantage...