I had an uncle who used to say "I wasn't born on a mayonnaise farm".

 

That always made me laugh. I never really got it, but I knew what he meant. I guess that is enough.

This ain't my first rodeo.

"Been down that road before".

Would "smarter than the average bear" qualify?

 

Only if your name is Yogi.

Don't lie to me, I'm not stupid.

I'm mature enough to forgive you but not stupid enough to trust you.

I'm not stupid just using my brain sparingly.

I have been around the block a time or two.

For the thread topic: A penny saved is a penny earned. The early bird catches the worm, but the second mouse gets the cheese. The squeaking wheel gets the grease. For the thread idea most have pursued," A fish short of a full string." " A card short of a full deck."

" Tough times don't last, tough people do."