Tyler’s brother Vin and his BFF Frank were at the house and got us into swimming. I always got nervous swimming because my moob to stomach ratio was...so off that I looked like a female flashing at times. Frank was a jock but a really cool guy and vin was more reserved and mature the older bro to Tyler was chubby with a full beard at 17 and full body hair. Vin had a very average size cock while frank was the biggest out of our circle. Frank was tall athletic and handsome. Frank and I would play. I heard them making some joyful noises then i didn’t hear their voice again i stood up and wanted to go in to my room when my eyes caught a glance of Kim’s computer since her door was not properly closed i saw them watching a porn video i stood there for two minutes watching them then i noticed that they were both turned on by the video it was a threesome video then the thought of me engaging in a threesome at that moment came into my head not even minding that my sister was there. I went into. I just could not see Ishan’s cock, it was nestled right in. His chest crushed her breasts, and she was lying in his arms in a possessive embrace. They were kissing each other, at the same time. It was a beautiful sight to watch the conjugal sex between Seema and Ishan.This cannot be their first time. Such beautiful understanding of each other’s bodies and coordination of motions, this cannot be their debut. Ishan would take ages to enter me, and here in less an a second he is deep into Seema. I. The doctor said she'd be there for a few nights, and I started to formulate my plan. The first day back from visiting mom I got in the shower immediately I shaved and scrubbed as the thought that I'd attempt to seduce my father crossed my mind, my hands roamed my body touching my newly shaven pussy I turned the shower head to power burst and spread my lips. The pressure on my clit was too much, I moaned out, "daddy" and from the other room I heard him reply, "What, baby?" That shocked my back.