"No Sis, we can't do that, it's SO wrong!...I mean, hey, don't grab, I mean don't suck my cock, I can't I mean, incest and all, and, dammit, Sis, what are you a SLUT??....oh fuck, yeah, I guess my little sister IS a slut....Hey now, easy, or I'll shoot my wad down your throat!...
{Cock out of your mouth, and you quickly pull it down and guide it into your tight wet cunt}....FUCKKK...I mean, incest, it's BAD ad all, and fuck, your pussy feels so good, Sis....I can't believe you um, I mean, I'd better pull out, and...no, wait, fuck, FUCKKK...UUGGHHHNNNNNNNN!!!!!!!!!.....
Oh FUCK!!!....too late now...."
"ok, ok Sis...but SHHHH!!!!...we can't let Mom hear us!!...and I'm sorry if I don't last long, this will be my first time, so...AHHHhhhhh, oh Sis, it slid right in!...you feel SO SOFT, so tight, so wet!!!...mmmm......oh oh....I..I mean, here it cums!!!!!!....NNNNGGGG!!!!!!!....oh FUCKKKK!!!!!....
Ahhh, oh, HOLYFUCK, No, no, NOOO, MOM!!!!...It's not...I mean, uh-oh....."