So me and my girlfriend were hanging out at a park tonight after a night of drinking. The park is set up with two playsets about 30 feet apart. Me and my girlfriend were just sitting on one of them talking when I heard a noise. I turned and saw two people walking onto the other playset. I looked back about 10 seconds later and noticed the guy was taking off his shirt. I told my girlfriend and said we should leave. She looked and said "babe that's your sister, and she only has on a bra". I said "no way it's definitely not", hoping to all god it wasn't. I then heard my sisters boyfriend mumble something, and heard my sister yell "Omg! No way! This is so weird! Tell them to leave, at least I'm drunk enough so I won't remember this." AHHHHHHHHHHHHHHHHHH!!!!! So akward and its glued into my head. I'm gonna finish my alcohol and smoke to clear my head.