Sam just sat against the tree as Jen and Sayler went shopping. Sam kept having orgasm after orgasm, but not like usual. Instead, this mind-blowing pleasure was coming from her crotch. Sayler must be fucking so many people! Sam was rendered motionless by the intense waves sent down her cord, eventually starting to orgasm herself.
After what seemed like years, Jen and Sayler return to Sam. "Jeeze, Sayler, did you fuck everyone there?" Sam says, irritated at both the constant pleasure, shown by the fifteen foot spread of drying cum on the grass, and their lateness.
"Pretty much! Some cute girls wanted me to sing afterwards, so I did my latest single for them." Sayler said, beaming.
"Say... Sam, let's head home, maybe fuck mom some, let both you and Sayler have turns, and then do something else later, maybe a board game or something." Jen said, heading home and untangling them from the tree. Sam walked along in silence, taking it in. 'So Sayler Twift lives with us? Is part of us? Why is my favorite singer also my cock? Why do Jen and everyone else think this is normal? Until this afternoon it had just been jen and I." Sam thought as they got home. Sayler had arrived first, opened the door, and was already helping mom take her clothes off. Sam had just barely made it to the couch before Sayler entered mom. Sam was screaming from ecstasy but Jen was just standing and smiling. Sayler orgasmed and pulled out, telling Sam to start her turn. Before she entered, however, Jen said "Sam Transform or Dare?" And shoved her into mom before any answer could be given.
"Times up you get both!" Jen yelled gleefully as Sam resurfaced "for your transform, you will get at least three more dickgirls. You will find them on the internet. They can be real people, actors, completely photoshopped, or even drawings! You will have one criteria for each. The first must be some kind of porn. The second must use the keywords 'big-titted' 'blonde' and 'slut'. The third simply must be an anthro creature, wether it be a real animal, a mythical creature, or even a made up creature. You will give your new dickgirls names. For your dare, you will ask me Transform or Dare and dare me to shit on mom once."
"Transform or dare?"
"Dare"
"I dare you to shit on mom once"
Sam snapped out of her curse trance just in time to see Jen lean her ass over mom's unconscious face and start to shit. "What the fuck are you doing?!" Sam yelled, wondering why her sister would take advantage of their mom's situation like that.
"Taking a dump, what does it look like?" Jen replied with a sarcastic smile.
Jen only had to drop one log, but ended up not only emptying her own bowels, but also Sam's and Sayler's. Their mom's head was now coated in a pile of fecal matter.
Sam went into her room and started to fulfill the transform by looking up some porn. She finds __________, __________, and _____________.