While spending a lot of time together growing up can cause petty arguments about stolen toys, clothing and snacks, you also have someone to team up against your parents with. The pact between two siblings who both don't want to get in trouble is a sacred, unbreakable vow. Of course, until mom finds out. Then, all bets are off.
When a recent Reddit user asked, "Siblings of Reddit, what's one story that you and your brother(s)/sister(s) swore to take to your graves before your parents ever find out about?" loyal brothers and sisters everywhere were ready to share their deepest family secrets.
When I was 14 and my brother was 16, my parents went shopping and I was in charge of making sure my bro and his gf didn’t do anything “my parents wouldn’t approve of”. So obviously I told him he had about 20 minutes before they got back and I will be upstairs. About 15 minutes later I hear a car pull up the driveway so I rush downstairs to tell him to wrap it up and I see his girlfriend on her knees, literally blowing on his d*ck. She thought a blow job was just blowing cold air on a d*ck, and my brother was too young to know better. I made eye contact with my brother and told him that our parents were home and ran back up stairs. We haven’t talked about it since and that was 7 years ago.