Don't Be A Dick - Vinyl Sticker
Ever since we were kids we've had to fight the urge not to put stickers in places (and on people) we shouldn't. As adults our only acceptable options have been slimmed down to laptops and bicycles. So be the envy of the office/bike shed with this white gloss vinyl DBAD delight.
Also handy for passive aggressive messaging to crappy colleagues or raging road users who might need a little hint on how to be a better human.