It was supposed to be just for fun when I talked my step-dad into tying up my step sister with me when she came home from college to visit but I'm getting a funny vibe now. He has us both bound and gagged and is taking a few pics when suddenly he pulls Alexis' top up allowing her huge, full tits to fall free...and then he does the same to me! I'm fine being naked in front of him, he's tied me naked before but this is different, my step sis is involved but bound as we are there isn't anything we can do but let him continue with the photos. Eventually step-dad comes back over and seems to be thi... Show more