Going into the supermarket, and picking at the grapes, (without paying obviously) choosing which ones are best for you, eating a few, and throwing any back into the bunch what don't meet your standards. Secretly knowing that other people may well have to eat the molested grapes you have touched up for like 5 minutes.
Person 1: Ummm them red grapes are lookin tasty
(sneaks a few in mouth)
Person 2: What about the white ones
(Person 1 looks and feels)
Person 1: Naa their brown and shitty at the top
(Supermarket Manager looks and spectates)
Supermarket Manager: Grape Rape.