on some real shit

slang word for seriously, literally,
dude your the best basketball player i have ever seen” “im alright but thanks” “nahh on some real shit, you good
A phrase usually used to signify¹ a very serious comment.
Lets say that you’re standing in the hallway joking with your friends when u realize ur late for class u would say something like: Yall niggaz be trippin, but on some real shit… I gotta go cause I’m about to be late.

Footnotes

1. mean ↩