Currently in IB Spanish. Well in Spanish the word Happy translates to Feliz and the word Birthday translates to cumpleaÃ±os. So the correct way to say it is Feliz Cumpleanos. However unlike in the United States, Spanish culture differs by region and most people just congratulate the person by saying something like Felicidades.
The formal meaning of flex is to show off your muscles, and the slang meaning broadens that to just showing off in general, usually with money. Hip hop duo Rae Sremmurd condemned the activity of flexing in No Flex Zone, and once Nicki Minaj jumped on the remix, it was brought into the mainstream.
Best Answer: in slang it basically means what you said, buddy or pal. its usually used amongst themselves but if someone from a different ethnicity were to say it to a spanish person, usually mexican, it would be looked at as offensive because people already mock them using this word.