Wouldn't be surprised - zapping the rivals was all the rage in my time. I recall I personally witnessed.
66 (Hunter 6) were resident at Acklington (late 50s) when 74 (Hunters) were visiting for a gunnery camp. The morning they left all the fearsome Tiger Heads had been reduced to a sort of Kellogs Tony the Tiger - droopy whiskers, woebegone expression - quite artistically done too!
Early 60s Coningsby - 9 Sqn (Canberra 6) went out to the strip one morning to find all the Bats on the tail fins were wearing spectacles and a few had guide dogs.
617 (Vulcan) Edinburgh Field (Oz). A pair of size 10 footprints left a trail from the port wingtip up the wing, down into the air intakes, out No 2 jetpipe, across the wing , turned back down the fuselage, up the fin - appearing to use the lightning bolts as steps, over the top and down the other side, back out across the starboard wing and jumping off the tip. (this was when the Vs were still all white.)