Earlier this week, Steph posted about an awesome little app that can send anonymous complaint emails. Think of these handheld signs as the completely un-anonymous (though still quite effective) alternative:

[$16, Urban Outfitters]

Technically they're for road rage, but I see no reason why these signs aren't applicable to any and all annoying scenarious. 

[via Swissmiss]

Related: Road Rage: Expressing Emotions, Sign Of An Unhealthy Appetite