Stay in school, kids (part II)

If I owned a grocery store, and had a "10 items or less" lane, I would rig it so that alarms and flashing lights would go off once the cashier scanned an 11th item. A soothing voice would announce, "We're sorry, you have activated our automated idiot-detection system. Please step back and an associate will help you shortly." At which point the customer would be whisked to a back room for remedial math lessons.

I bet that would help speed up checkout.