the term refers to the heavily homosexual movie "
Bruno" and his homosexual exploits. You can use it to replace the term "no homo" before or after a sentence that can be confused o taken for a homosexual advance.
It is also an
apology or a
pardon for what I just said.
"This is
mad hard,
No Bruno"
"How do you like your nuts prepared, boiled or roasted. No Bruno"
"
NO Bruno, pass me the sack of balls over there"
"Put this in your mouth, No Bruno"