bro sir 

This word is a combination of informal and formal address to a teacher, professor or authoritative figure. The prefix 'bro' is commonly used for addressing friends (see 'bro' or 'brother').

Teacher: "Does anyone have any further questions?"
Student: "Excuse me bro sir... opps I mean, sir."

bro sir by moore.st September 1, 2009

Brosiris 

The god of dead parties.

Oh here comes Brosiris, party's over.

Brosiris by treyshot22 August 19, 2010

BroSir 

The transitional phase in a man's life where he moves from being a casual and carefree "Bro" to a more mature and sophisticated "Sir". This metamorphosis is bound to happen sooner or later, even if the individual still crashes on couches or lacks direction. However, even after reaching the status of a "Sir", the remnants of the "Bro" still reside within him. Leaving the everlasting BroSir.

While opening a door for a 23-99 year old … bro turned Sir . After you BroSir

Congratulation!! on that new job BroSir

BroSir!! Congratulations on the promotion!

Wow!! Brosir, your own house!?

BroSir by Zo19w4 June 12, 2023