A McDonald's worker has been sacked after seeking revenge on a "rude" customer.
In a post to social media, the former fast-food employee revealed how they got their own back after a sour interaction.
In the viral video, the McDonald's worker can be seen putting whipped cream on the customers shake order which would be a normal act.
But instead of adding on caramel sauce, the worker was seen drizzing a packet of sweet and sour sauce over the whipped cream and into the shake.
"When the customer has an attitude but you remember you only make 8.50 an hour," they wrote.