Old story from a RAF C-130 on a flag-stop at Dulles, Washington.
C-130 calls for start-up at same time as Speedbird 123(BA Concorde). Both given clearance and C-130 starts very quickly and asks for taxy clearance which he gets. C-130 then reverse taxis off stand and proceeds to pass the pride of BA with the witty RT comment -
"Speedbird 123 this is ASCOT 1234 - race you to the holding point!". Smug faces all round on the C-130 flight deck.
20 minutes later on the slow climb-out the C-130 crew hear the call "ASCOT 1234 this is Speedbird 123 - race you to Lands End!"
DOH!