Another tale concerning the 'cousins':
RAF exchange officer is posted to a USMC Harrier Sqn. Amongst their gung-ho ways is the disquieting idea of a morning run. One of those "Hoo-ah. One, Two, Three, Four - I love thu' Mreenkaw" things which will be familar to anyone who's ever seen "Full Metal Jacket"...
Septic Marine: "Sir - are you comin' on our run?"
Brit mate: "Run? Good God no, old chap. British officers don't run - it would panic the troops!"