I walked in on my sister bound spread and full of cum

I went to my sisters house oped the door went into the lounge room and boom

There she was on a matress naked legs bound behind her head arms bound underneath her ass a gag in her mouth and a quite obviously cum filled pussy and sex toy’s everywhere i just froze

As she muffled fuck turn around

Her bf came in and laughed

I left immediately

I spoke to her on the phone later and turns out she’s into some pretty kinky stuff

Not sure ill ever look at her the same

I think the picture is burnt in my brain