Rainbow has always had a dream to screw the pooch, quite literally. When Twilight invites her over to do some experiments, she finds out that she'll get to fulfill her dreams. However Twilight has some other things in mind for "testing".

Rainbow is willing to do anything to get her hands on that preview of Daring Do that Twilight is offering her, even if it's the worse sounding thing in all of Equestria.

Warning: This Story contains Shit, Urine, Sex with a Dog, 2 Futa Mares, Dirty Dirty Sex, and a little bit of Sounding.

You have been warned of what's included, only for those who are brave enough to face the 7 rings of hell and come back.