A warning sticker inspired by my mechanic brothers who get pretty fed up with outside input on how they do their jobs. This sticker is a great way to let coworkers or customers know exactly how you feel about being told how to do your job. 
 
Weather proof
UV resistant
Sticks to almost any hard surface like toolboxes, hardhats, truck bumpers, windows, etc.
 
Shows how you feel. Sticks through every dumb suggestion.