My mate remembers a BOAC VC10 Captain at Manchester in the '60s. Red cap comes onto the flight deck, "papers to sign please skip". No response at all from the LH seat. He ignores the Red cap and instructs the P2 on technique instead.
"Skipper, can you sign the papers please?".
No response, even though the inter-pilot conversation has now ceased.
"scuse me skipper, can you sign the papers plese?"
Again,as far as the Captian is concerned the Red cap may as well not exist. At that point the P2 turned to the Red cap saying "I think the c*nt's waiting for you to call him 'Sir'".