Same as a Radar except picks up the doucheness in a human being. The average douche-dar is accurate up to 65 yards.
Ron: Aye hit this gilbey's vodka up cuddie.
Dylan: Na, my mom will smell it on me when i come home tomorrow.
Logan: I think im picking some one up on my douche-dar. I'm pretty sure it's Dylan.
Jack: Stuey ass Dylan.
a person who is douche-esque; mean and tyrannical,spongy and assholic, like a Nazi, ergo, a douche Nazi
Clark: Hey Goldstein, my grandpa died in WWII
Billy: Really...I'm sorry man.
Clark: Yeah, he fell off the watch tower!
Billy: You're such a douche Nazi Clark...