A dead heat is a race in which two or more entrants have the same time; a tie. From heat, meaning a single race in a competition featuring many races, or a preliminary race for qualification or starting position in the main event.
In any kind of competition, a result in which two or more competitors have exactly the same winning score, time etc.
It means either pick up some stuff and fill your hands - or in idiomatic usage, it means draw your guns and get ready to shoot it out.
Usually "flogging a dead horse" imagine you are beating the horse trying to get it to move even though it is dead. It means that you are trying to do something that cannot be done.
If you are "head and shoulders above" the crowd, then you are taller than everyone else. In idiomatic usage, this means that you really stand out, you are better than the rest, you are noticeable in a good way.
babysitting
Pot luck means you'll take whatever is being cooked when you show up for a meal; in idiomatic usage, it means that you'll accept whatever happens to turn up.
This mean someone is pretending to have good intentions, but in fact, it's just the opposite.
traitor, backbiter
to be un happy
The proper phrase is scratch that itch. To scratch an itch means that you rub the itchy spot, such as with your fingernails or an object, to make it stop itching. The idiomatic usage would be to do something in order to satisfy a craving or desire.
Think about this and you can figure it out. An idiom seems to mean one thing but actually means another. Does "with regard" mean just what it seems to? Yes, it does. Therefore, this phrase is not an idiomatic expression.
It means that it is extremely easy.
This is slang - it means your spouse.