Douchedar

Noun
/do͞oSHdär/
The uncanny ability to sense a person's douchebaggery, usually upon sight, but sometimes it is not triggered until said douchebag opens their mouth.

My douchedar went off as soon as he walked into the room with his salmon shorts and aviators and introduced himself as Chad.

The guy next to you at the music festival: "This DJ's sick. That top is sick. My hat is sick. SQUAD" major douchedar alert.