An RAF officer visits a unit under his command.

While eating breakfast with the crew he was impressed to see the RAF insignia stamped on every biscuit.

He went to the chef to ask how this feat was done, so it could be used on other units under his command.

The chef replied, "Well, sir, after each one is cut out I just slap it here against my belt buckle which bears the insignia."

Horrified the officer exclaims, "That's very unhygienic!"

The chef shrugs, and replies, "If you feel that way sir, I suggest you avoid the doughnuts."