Sex with Sis in Public Restroom

Just recently our parents took us out to dinner. My sis gave me a handjob under the table. I was about to explode my load all over her hands, but she stopped right before I could finish. Sis thought this was funny but I knew I had to figure out a way to get my release.
After we finished the main part of our meals, sis decided to excuse herself and go to the restroom. My parents always order desert, so I knew I had some time to before we would leave for home. So I knew I had to act quickly.
Watch as I surprise my sis in the public restroom while she is still sitting on the toilet! I lock us both in there pull her jeans down and fuck her right in the restaurant’s restroom! Then just to make sure she doesn’t get pregnant I bust my nuts into her open willing mouth and she swallows her brother’s entire sticky load.