Meaning ' tonight's the night ' but in a more fun and up beat way. Often you will be admired for using such a exciting term.
Jim: Gosh.. I'm having such a crappy day.
Sue: Jim tonight is going to be so much fun!! Don't be grumpy. TO-NAS-TAY-NAH! lets live it up!
When someone says your weiner is really small and you know its not.
Nah - Nis - In't
"Your Weiner is so tiny!"
"Nah Nisin't!"
Guy: "wanna netflix and chill girl?"
Gurl: "SHY NAH SON"
The text response to a mate who is completely spangled and sends you a nonsensical text message. It tells them that they are talking complete bollocks so rational replies aren't required
Hey, I was thinking on Saturday, No Friday what am I talking that we could nnnnnnnnsjdfjdfjdsdj
Ming Ming Nah Nah