Where it happened: sister's bed
one day, my big sister, 12, came home after a date that left her sexually unsatisfiad(she sleeps with 90% of the boys she dates), so she had me pull down my pants. first, i fingered her, then she told me to stick my dick in her pussy. so i did, and it felt great!!!!!!!!! i yelled so loud that our parewnts found out and grounded us both for 3 monthes.