When this brewery worker's prank resulted in 200,000 cans of beer being recalled, he must have been expecting a massive bollocking and his P45 the next morning.

The packing manager for BrewDog, Graeme Wallace, was pissed off when the company was described as not being 'punk' enough. Instead of getting on with his job like everyone else, he went to the extreme to show us all just how fucking punk the craft beer brand is.

The Mirror reported that he changed the wording on 200,000 cans of Punk IPA to read 'MOTHER FUCKER DAY' before they were shipped to the UK.
http://www.theladbible.com/articles/lad-wins-employee-of-the-month-for-prank-that-results-in-200-000-beer-cans-being-recalled-130416