I once worked with a bloke, a Maths teacher, who was a plane spotter. His desk was surrounded by pictures of various planes types and their badges. If I happened to bump into him outdoors he'd often point to a passing plane, a microscopic speck high up in the sky that I could hardly see, and say things like "That's Singapore Airlines Flight 217 from Bangkok, ETA Sydney 1500 hrs, Pilot Captain Roland MacGillicuddy, an A360 type 2C model 010 slash B, serviced Kuala Lumpur on the third of May...." or some such arcana; and he wasn't joking. He and his chums used to stand around the perimeter of Sydney airport identifying and photographing every aviatory phenomenon possible. He's bring the shots to school and show them around. He was delirious when he learnt that my brother-in-law was pilot to some Gulf State royals, and I was very popular when I showed him photos and video of the Royal jet, complete with seat belted throne, king-size bed (also including belt) and khazi carrying the royal crest. With a bunch of fellow plane-spotters he would go off to some international airport overseas for an extended plane-watching session; this became much harder post-September 11th 2001. The plane-spotting band were detained at an American airport as they clicked away at their cameras, and though they were eventually released and told to bugger off, their plane-spotting was considerably reduced after that. I don't know if there are any plane-spotting poems, and I've never heard that it's code for any sort of drug-consumption.