(A customer walks up to the counter in a very aggressive way.)

Customer: “You sold a very violent game to my 14 year old son!”

Me: “I apologize, which game did we sell him?”

(The customer hands me copy of the game.)

Me: “Sir, this games is rated "M" we won’t sell this game to anyone under the age of 17 without proper I.D. Are you sure he got it here?”

Customer: “Yeah!” *hands me receipt*

(The receipt had been printed at my register, and was marked for earlier that day.)

Me: “The only copy of this game we sold today was sold to a 21 year old.”

Customer: “Well he acts like a 14 year old!”

Related:
Ah, Fathers, Part 3
Ah, Fathers, Part 2
Ah, Fathers