I did hear about one crew after the Bitch comment thing.
Day one everything that normally required a "check" response was replied with by "woof" by the FO.
Second day of this, it started to get on the Captains tits.
Third day the FO's meal consisted of pedigree chum dog food, which the captain had brought in and given to the hosties to dish up.
Day 4 it went back to being "check"