briefcase mong
A mong who carries a briefcase. It is quite common for them to wear suits and have hot mums
From the british show 'The Inbetweeners', Will is reffered to as a 'Briefcase Mong'.
briefcase mong
A phrase commonly used to insult individuals carrying a briefcase and wearing a suit.
Jay: Alright briefcase mong?
Will: I am here you know.
Will: I am here you know.
briefcase mong wipe
Typically found at a school setting he/she is that one overly formal person in the group who fantasizes about their super hot mom and is always found carrying around his trusty briefcase with witch he uses to wipe his own ass.
Man can't this wanker stop acting like a briefcase mong wipe!