Like The Blind Driving The Blind

(My mom, brother, sister, and I are together in the family car and are approaching a stop sign. We cruise over those little bumps just before the sign. My brother must be about 8, my sister about 13.)

Sister: “I wonder what those bumps are for.”

(The rest of us silently look at each other.)

Mom: “Well, what do you think they’re for?”

Sister: *silently concentrating very hard on trying to figure this out*

Brother: “Geez, [Sister]! It’s so the blind people know where the stop signs are.”

Me & Mom: *chuckling*

Sister: *dead serious* “Oh. That makes sense.”