You wouldn't get haemorrhoids from a four hour flight !
I have a "stupid" question and I am sure I might get a lot of wise answers. . . . . . . . . . . . .
Is this allowed?
He may simply be asking if the crew are allowed to exit the flight deck AT ALL during flight ! Some non-fliers have weird ideas about this.
Yes, crews can exit the F/D, if only to use the toilet ! All companies will have their own procedures to check first that no suspicious characters are lurking before the door is unlocked !