>>In drainpipe trews and fancy shoes and something intense in ties.<<

Drainpipes are called that because that's kind of what they look like.

The fancy shoes are called beetle crushers are generally made of bright-colored suede or something on the top with laces or straps but the soles and heels are always crepe rubber.

>>Don't bother to wash -- it's sure to rain;
Remember your cosh and bicycle chain;
Today's the day the Teddy boys have their picnic.<<

They were called Cosh Boys initially in the early 50s. A cosh is a kind of baton or club. I guess that's where "A Clockwork Orange" took its imagery from. They were quite violent but as the Teddy movement grew, it mellowed a little more. It still exists and they still dress the same and generally will only listen to 50s rocknroll, maybe some Beatles. It would appear that Teds and punks do not get along. A Ted had told me how much he and his mates hated punks and took great delight in pummeling them. It made me think of that one Emerson, Lake & Palmer song, "Bennie the Bouncer," where a big Ted named Bennie squares off against a punker with a blade named Savage Sid and Greg Lake sings it in this raucous cockney accent.

Teddy girls dress in Toreador-style jeans or circle skirts. 50s chicks. I suppose some might even wear poodles on them although that might have been purely American. There's also a middle ground--punkabilly. In fact, these punk-teddy hybrid bands are often excellent--really really cool stuff!! But the English teddy bands today put out some really hard-hitting face-shredding rockabilly. There's even a racist, xenophobic branch of teds.

But from what I saw, Teddyism is distinctly British. I don't think you can really be a ted unless you are British.