What is the difference between try to do and try and do? To me (non-native speaker), asking someone try and do this seems a bit rude. It's like saying you can try all you want but this must be done: ...
I'm curious: is this valid under some rule of grammar I don't know? Was it ever valid, or was it slang or a personal idiosyncrasy? Or (I shudder to think) was it invented by later authors, as a ...