Well Chuck, im from London and the problem with rhyming slang is that it is forever evolving,

But,

Aristotle = bottle
Ping Pong Tiddly - not too sure about this one, is from Spike Milligans "ping pong tiddly i po".
Tiddly means pissed, so maybe not so much rhyming but a reference to the strongest stuff available.

Nuclear Sub = pub.

When discussing money, you really have to be on your toes.

If you give someone a Bobby for something that is worth a Pony then im afraid you need to give them another Lady....LOL!

Sometimes its best to chuck em a Bullseye and let them sort it out