Whoa, Nellie! exclamation cliché
Used to tell a horse to stop moving forward, or to tell a person to stop what they are doing or do it more slowly.
"Whoa, Nellie! Stop right there" he told to the horse.
Whoa, Nellie! You need to sit over there and calm yourself.
Used to express your surprise or interest, especially when something is more intense than you expected.
Whoa, Nellie! That's a great movie.
"Whoa, Nellie! I need to take a breath" - "The game is more intense than your expectation, huh?"
The phrase is generally thought to have originated as a command to slow down a horse. The exclamation "whoa" was first recorded in 1460-80 as a dialectal variant of "ho" and "Nelly" is the horse's name.
To not get any sleep at all
I'm so tired! I have not slept one wink last night.