When one has a head that's the size of a house but is stillstupid.
Bob: That piece of shit wanted to cut off his dick but used a blunt knife instead of asking a baboon to chomp it off like how they chomp a banana, what a headhouse!
Angry Dick: Shut the fuck up!
Putting somebody in charge of a job, when they have a conflict of interest. Often used to refer to industry "self-regulation" or to putting an industry insider on the board that regulates that industry, e.g., appointing an executive of Comcast as chairman of the FCC.
Can also refer to a similar problem in private industry, e.g., putting the manager of a failed project in charge of the investigation into why the project failed.
MikeTaylor has been appointed to head the Food Safety Working Group at the FDA. The President has set the fox to guard the henhouse.
Richard's crib is the designation referred to as a henhouse where all the cocks (men) go through the back door to his house in order to attend a brodeo. where there's nothing but men, alcohol and video games till 4 am.
Jamie: Lets hit up the henhouse.
Phyllis: Bet. Ill bring the beer. This party is gonna crack.
A place predominantly occupied by women. This could be a workplace, classroom, social event or any other public place where there is, by a wide margin, more women than men. The term henhouse is used because of the conspicuous absence of cocks (roosters–in this case, men).
This sociology class is a total henhouse, John and I are the only guys here.
Man, I hate working at Bath and Body Works--it's a total henhouse! There's nobody to talk football with at lunch.