Paul Mitchell's Son Sued You Can't Hump My Face!!!

11/21/2011 4:30 AM PST

Paul Mitchell's Son Angus Sued -- You Can't Hump My Face!!!

The son of famed hairstylist Paul Mitchell -- a well-known stylist in his own right -- is a penis-grabbing coke-snorting face-humper ... this according to a new lawsuit.

Angus Mitchell is being sued by an ex-employee named Richard Flett -- who filed a lawsuit last week in L.A. County Superior Court, claiming he was wrongfully terminated ... after being exposed to Mitchell's "bizarre" sexual harassment and rampant drug use on the job.

Among the accusations -- Flett claims Angus snuck into his hotel room to watch Flett's penis while he slept, he "repeatedly" grabbed Flett's crotch in front of co-workers, he "ostentatiously" watched Flett urinate, and once shoved his crotch into Flett's face in order to hump it.

But it didn't end there -- Flett claims Angus also pressured employees to buy him cocaine ... and then use it with him.

Flett is suing for unspecified damages.

A rep for Mitchell tells TMZ ... "In our view, this is somewhere between laughable and sad, just an attempt by a disgruntled former employee to see if he can find a pot of gold at the end of the rainbow, and that's not going to work."