Someone who is a combination of both a douche and a tool. A great example would be a lacrosse player who walks around with a button down shirt and a tie over his shoulder.
Person 1: That laxer is a shithead!
Person 2: I know! He's such a douche-tool!
A Tooley O' Douche is a person who has the characteristics of a douchebag. Usually a nerd, usually in band, usually wears jean shorts. Nobody wants to be around a Tooley O' Douche. This Tooley O' Douche usually is in denial about being his Tooley O' Douchness and often tries to sound/look cooler than he is. It doesn't work.
Dom: "Man that guy Matt is such a dick"
Austin: "Oh, I know he's a real Tooley O' Douche"