Oops! Adik tiri saya "secara tidak sengaja" duduk di atas batang saya semasa percutian keluarga

I had to share a bed with my stepsister on the family vacation trip. I didn't expect her to sleep without underwear! In the morning she woke up to admire the view while I admired her naked ass and masturbated while watching her. She accidentally sat on my erect cock and we ended up fucking until I came on her beautiful round ass.