Although the standard definition is one who has their head so far up their ass that they may as well be wearing their ass as a hat. I also like to imagine it as being someone being so useless that they are just as or moresoe useless as a hat that you wear on your arse. obviously nudist may disagree and wouldnt mind saving their asses from sun burn, but to them i say; your not a real nudist!
Bill is such a fucking bludger hes a freakin ass hat.
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