Forbidden Kingdom is the space/area beneath a fat mans belly Hidden Penis. It is very hard to access for fat men and usually leads to a difficult time while urinating or attempting sexual activities.
Dude 1 "Who pissed on the frickin' toilet seat?!"
Dude 2 "HAha it was that dude with the forbidden kingdom"
Dude 1 "What a GAF"
Dude 2 "HAha it was that dude with the forbidden kingdom"
Dude 1 "What a GAF"
by M to theJ June 24, 2008