Man knowledge is how to fix stuff...
for example:
a generator
a rifle
a tractor
plumbing
Since Barack Obama has absolutely no Man knowledge, (seriously, picture B.O, changing a flat tire on an automobile, fixing an irrigation system, lighting a BBQ, replacing a float in a toilet, fixing a leaky faucet. He can't, remember he is a Harvard graduate)
here are some pic's to illustrate
dress pants polo shirt and sandals
oh, so very third world
and the third world does not fix stuff
second pic, men don't order drinks with a cherry on top