Punjabi for "Do it like a lion" or "Be a lion"
Usually used to urge someone to do something incredibly risky and dangerous.
*Approaches Red Light but doesn't stop* Sher Banke! a friend yells. *The driver looks back to make sure their are no cops behind him*
Basically it means do it like a lion or the way lion would have done it
THIS IS HOW I DO IT . GHUMDA MAI SHER BANKE