"Singing your head off" means that you are singing loudly and enthusiastically, you are really enjoying singing.
An idiom is something that does not mean what the phrase says literally, so yes. You can't actually laugh your head off.
It means what it sounds like. Or it can mean just plain and simply to kill said person.
When its in a title. Like "Dunant College" (completely made up off the top of my head).
It means take the lid off the top of the cookpot.
The correct phrase is "Off the top of their head."
Wow!! That's Creepy
I assume you mean what that is called. The answer is improvisation, also know as improv.
That means answering with the first thought(s) that come(s) to mind.
Off the top of my head, I believe that I can.
it mean your off your head
Inconsistent cooking means you like to cook on and on it means you cook with what in your head. You dont really need a book or anything to do you you know off the top of your head.
Off the top of my head: warden
tenderness
Approximate is to estimate. For instance, if you approximate how many jelly beans are in a jar, you guess how many are in there, but you do not know the answer off the top of your head.
The saying "off the top of your head" originated in the early 20th century, likely from the idea of something coming immediately to mind without much thought, similar to something falling off the top of your head. It conveys a sense of spontaneity and lack of preparation.
if u mean by highest as in money i think its guilded armor but that's off the top of my head. If you mean by best then rune armor