argot ~ ar + got (goat); when our goat says "meh...mheh...meh..." we cannot understand its lingo - only other goats can understand it. So, argot is a lingo only small group of people (here goats) can understand.
ar+got(goat).. if a few GOATs say 'arrr arrr' instad of the usual 'mheh mheh'. it will be a slang (argot) in their world..;)
goat:mehehehehe me:arr.. goat:mehehhe me:arr tu dusre goatsehi baat kar me: :P