Sensi,the tourettes sufferers say the swearwords becuase they fear to say the swearwords.
We cuss easily and without guilt and yet they fear swearing to such an extent that they try to supress even thinking the word.
Because there is a fault in the circuitry of the brain ,they cannot control deleting the thought,which then is reflexed vocally.One might think that its a form of rebellion,when in actual fact a tourettes sufferer is an innocent or at least far purer than we horny,drunk,smoked-up hippies.
I saw a show last nite on new research and info about tourettes.
(www.carteblanche.co.za)