I could care less

Oh, could you care MORE, too? Just exactly what are you trying to say???

I've got this idea I'd like to flush out...

So your idea is crap you need to get rid of? Or is your idea a helpless bird you want to scare out of hiding so someone can shoot it down? Personally, I like fleshing out ideas...it's more constructive!

The sun sure is bright today!

Now, I don't know this from personal experience, but I suspect the sun is bright every day.

Mute Point

Moot Point

It was a very unique experience

You'd probably agree with me in saying you have the most ultimate bad grammar.

He excited the crowd to riot

Incited. INCITED!

...so I literally EXPLODED at the salesperson...

God, how I wish that were true.

Punctuation

Just remember -- periods and commas go inside quotes and/or parentheses ("...see, like this.")