Assuming you mean sup as in "what's up?", it's spelled 'sup.
sup means whats up
Sup means to dine with or eat with, as in supper
what does Nx mean in texting or emails
it means how are you
"Cal sup re" means nothing in French.
It mean love ya when texting
"Yum yum sup sup" does not have a literal translation in Chinese. It sounds like it could be an onomatopoeic expression in English expressing enjoyment of food.
It is short for "what's up".
It means under.
Its a mix of wazup and sup
He's asking you how you are. There's not much else you can read into "sup".