Don't start me on... / If you don' t want them...

[Letter5678]

What does the guy say at 0:18 and 0:41?
Thank you.

https://www.youtube.com/watch?v=HE4SL35eS2M

 

[jutfrank]

Don't start me on that, little man.

If you don't want them, I'll just as well leave.

 

[Letter5678]

Don't start me on that, little man.

If you don't want them, I'll just as well leave.

Thank you very much!
Could you please tell me what "start me on that" means?

 

[jutfrank]

Don't start me on that means: don't raise that subject because I really don't want to talk about it right now.

 

[emsr2d2]

In BrE, that's usually worded "Don't get me started on that". It can mean "If you encourage me to start talking about that, I might never stop. I have a lot to say about it!"

 

[GoesStation]

In BrE, that's usually worded "Don't get me started on that".

That's how we normally say it in American English, too.