When you unintentionally ( Or intentionally, only you know!) say something offensive or insulting about any of your friend's family members. Doing as such is a "rakhsh" (Adj. unintentionally offensive behavior) thing to do.
Ex#1:
-What kind of a f****t owns this pink lighter
+You pulled out a rakhsh. That's my dad's, dummy.
(pull out a rakhsh: you just insulted my dad.)
Ex#2:
-That car is parked so awfully. What an idiot!
+That's my grandpa's car, Rakhsh.