look up any word, like sweetest day:
 
2.
For non-Jewish boys, an excuse to have a huge party and receive lots of presents!
Boy A- Dude, are you going to George's Bro Mitzvah?! It's gonna rock!
by Haley Barth March 02, 2008
 
1.
A bro's right of passage.
Today Little Vigo is celebrating his Bro Mitzvah. We should all be there to celebrate.
by J R. August 10, 2009