Definitions by TJ De Franco

yerp 

A war-like call to all nearby friends alerting them that you are in/ about to be in a fight.

TJ walks into a party, bumps into Pat. Pat starts to engage a fight with person A. Jessie who is upstairs and who is also TJ's best friend hears TJ yell, " YERP!," so Jessie runs down the stairs and attacks Pat.

yerp by TJ De Franco August 25, 2010