The guys who strut around wearing Fedora Hats (or over-sized baseball caps, etc. ) thinking that they are the epitome of cool, when in fact, everyone who sees them is thinking :"He's a real Douche."
That man is Douche Clueless. He is unaware that he looks ridiculous.
"Check out that guy by the pool with the felt Fedora Hat. Ouch! He is Douche Clueless!"
When you brought the flowers for me, not knowing that my Mother just died, that was really Douche Clueless.