This is not an idiom. When you see AS ___ AS ___, you are looking at A Simile. This one is comparing something to the red color of a turkey's wattle.
This is a term used when someone turns red (blushes) because they are embarrassed.
In debt. Its antithesis, "in the black," refers to having a balanced budget.
It is red tape.
It means to be patriotic (by reference to flying the flag).
Your face usually turns red when you are embarrassed, so this phrase means that someone was ashamed of something.
It can mean several things, depending on whether it is meant literally or as an idiom. Literally, it would mean that the tip of something is red-hot, or glowing with heat. As an idiom, a "tip" is information that can be used in a situation, so a "red-hot" one would be something that is especially important at the moment, something timely and greatly useful.
If you snore, you sound like someone sawing logs -- therefore, it means to sleep deeply and usually to snore.
This term most likely originates from bull fighting, where the matador would wave a red cape at a bull -- a color that enrages the bull and causes him to charge. Seeing red is acting like a bull seeing that cape...getting so angry that rationality is lost.
simile
It's not an idiom because you can figure it out if you just think of the meaning of the words. It IS a metaphor, however, comparing the earth to something that moves. If you saw the earth "rushing up," then you'd be falling, wouldn't you?
It doesn't "mean" anything, except that you saw a red bird while in the company of your boyfriend.