Father's Day is this Sunday and all this week on Now I've Heard Everything we've been featuring interviews about fathers. 

Today a conversation with a father and son who have been making us laugh for decades. 

Actor-comedian Chris Elliott and his dad, Bob Elliott, collaborated on a 1989 book called "Daddy's Boy: A Son's Shocking Account of Life with a Famous Father."  

Don't be alarmed -- it's a parody celebrity tell-all memoirs, and was all very, very tongue-in-cheek -- as was our interview just before Fathers Day 1989.