A restaurant server not informing their guest that a gratuity has already been posted to their check (as is policy in many establishments on tables of 6 or 8 or more guests), thereby the guest tips again not realizing it has been included, resulting in the waiter receiving, basically, a double gratuity.

When some little bitchboy is acting like a little tiny pee pee poo poo baby and messing up the group plans.