Three sisters asked their parents if their boyfriends could stay the night. Their parents said yes, so they called their boyfriends.

That night, the sisters' mother was walking down the hall passed their bedrooms going to do laundry. As she passed the first girl's bedroom, she heard screaming. She passed the second girl's bedroom and heard laughing. And, then she walked by the third girl's bedroom and heard nothing.

The next morning after the girls' boyfriends had left, their mother asked the first girl, "I was walking passed your room, and I heard screaming." The girl replied, "Mama, it hurt!" So, then she asked the second girl, "I was walking passed your room, and I heard laughing." She replied, "Mama, it tickled!" Then, she asked the third girl, "I was walking passed your room, but I didn't anything." So, the girl told her, "But, mama, you always told me to never talk with my mouth full!"