A DoorDash pizza delivery driver had some choice words for a Texas customer about the amount she tipped him. The delivery guy hands over the pizza and told Lacey Purciful, "I just wanna say, it's a nice house for a $5 tip." Etiquette expert Thomas Farley says you should be tipping anywhere from 10% to 15% for delivery. The total cost of her order of breadsticks and a medium pizza was $22.78. That means the five dollars she gave the delivery guy comes out to a 22% percent tip.