Nachbros
Short for nacho brothers, this word came from the show Scrubs. It means two guys who are friends because one guy gave the other his leftover bar food, like nachos, after puking in a trash can.
My buddy gave me his nachos after I threw up in the bar. Now we're Nachbros for life.
We're Nachbros because he shared his nachos after I called his mom fat.
He gave me his nachos after I insulted his hair. Now we're Nachbros.