FK27 outbound from EGBB has an unusually good rate of climb, sufficiently good in fact that the following conversation took place.
Me: "xxx123 check your aircraft type is a Fokker Friendship?"
A/c; " Affirm London... (pause)... GTI."
Made me chuckle :-)
Also; In the days that the Red Devils used to parachute over Queens Parade and work TMA south for entry into controlled airspace, a Quantas jumbo on a SAM departure on a sunny day reported "Hey, London, there's an aircraft on our left hand side and there's people falling out of it."
Aware of the presence of the BN2 used by the team (GORED), the controller replied "is it a red islander?" The Quantas then replied "Blimey, that's a good radar!"