a greeting or expression commonly used between white boy wanna bees. The greeting replaces "yo what's up" or other greetings usually used between wanna be white boys. Ghetto impersonators.
Mike: Yeah fam, kill it.
Dave: yo what's up?
I walked into school and my boys greeted me with a yeah fam.
Dave: yo what's up?
I walked into school and my boys greeted me with a yeah fam.
by MuffinForBreakfast March 16, 2009
Get the yeah fammug.