The very rare merging of the commonly known douche and the largest known tool to man.
Signs that someone you know is a douchetool include:
They sporadically engage in random Tourette-like fist pumping.
They claim that they get many women when in fact they do not.
They proceed to change their facebook name to something that is different than their real name.
They are commonly known to flake on you if your not out on the lake because of their weird lake fetish.
Rony "Swisshouse" - Yo Swizzham check out mah facebook name!
Ashik "Swizzham" - Hell ya, let's fist pump to that Swishy Sweezy Swizz baby
DoucheTooth(noun)A phone accessory which generally goes in ones ear that lets everyone know you are a super important douche and way too busy for in-person human contact.
Jill: honey I have something really important to tell you. I ha..
Dave: (toggles Douchetooth and interrupts) Sorry babe I gotta take this.
Jill: your a f*ing douche
A douchetoolbag is a person who is so douchey and such a tool bag that words can not describe them. Not even the word "douchetoolbag" gives them justice. Activities may consist of
1 : Uploading shirtless pictures from the gym to facebook on a bi-hourly basis
2:People who constantly post pictures to social networks either planking, owling, making fish lips or duck face. aka "eating invisible spaghetti"
3: constantly eating power bars, drinking a protein shakes and drinking smart water
"Those guys from Jersey Shore that all dress alike and have their hair cut at the place are some real douchetoolbags"