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.