Had coffee with F/O mate of mine who flies 737's. He was quite upset. Seems he was landing on long runway and speed brake did not deploy on touch-down. The captain either failed to see it or deliberately ignored its non-operation.
The F/O who was winding up the reverse thrust spotted from his position in the RH seat that the speed brake did not come up. He immediately called "Speed brake not up". Captain did nothing. F/O again called speed brake not up. Captain did nothing. F/O now in full reverse then let go of reverse levers and reached over and actuated the speed brake - and returned to the reverse thrust levers. The captain roared to life and shouted (that was the correct word) "Don't you ever do that again - it is my job to actuate the speed brake - not yours".
Is it any wonder the some first officers become disillusioned when they have to crew with pedantics like that (if that is the appropriate word, of course)