Your head can rest assured that this will be super comfortable!
From the submitter:
The silver ducting is from a portable air con unit designed to stop the multi-million dollar machines overheat. The PSU fan on the PC pictured failed, and instead of replacing it, this baby kludge was born from momma kludge to duct cold air into the back of the case.
Hey bro can I borrow some cool air?
Redirects all of it.