something that happens thats so embarassing it makes you want to show all your friends naked baby photos of yourself just to make them stop talking about what you did.
i just scored a ming grot with 3 inch long nose hair-SHAMER!
A public e-mail sent out to the entire company detailing in explicit fashion an embarassing or lack of skill that is directed at one specific individual. Also can involve the lack of attention to detail, such as the taking the last Diet Coke from the fridge and not replacing the cold one with warm ones from the cabinet.
Dave received a shamer today for not not refilling the ice trays.