Mom fucks a stranger and the daughters spy on her on the hidden camera

When we got home, we thought our mother was gone. but when we were in the kitchen, we heard noises coming from the bedrooms. my sister and i went to see what was going on, but when we got to my mom's room, we saw that she was with someone we didn't know. she was on her knees giving a blowjob to a man we had never seen before. we were paralyzed and didn't know what to do. we watched until we got excited, so while listening to our mom's moans, we started masturbating. i know it sounds weird, but the whole situation was weird. and at that moment i had the most intense orgasm of my life.