A Monarch 757 on an empty positioning flight back to Luton from Bristol lines up and holds ready for a departure to the West initially. Bear in mind the mighty '75' is capable of some v impressive climbs even when laden.
After t/o clearance is issued:
757 (PF) to ATC: "Watch this !"
Made me grin - we never quite seem to grow up
(The former Bristol controller who recounts the tale reckons the a/c was passing FL100 by the time it reached the procedural turn to the North - which is a pretty tidy performance.)