"Curb Your Tongue, Knave!" is the fourth comedy album recorded by the Smothers Brothers, released November 1, 1963 on Mercury Records. The album was recorded live at Mister Kelly's in Chicago, Illinois. It reached number 13 on the Billboard Pop Albums chart. Curb Your Tongue, Knave! was the first of their original albums to be reissued on CD.
"Church Bells" (4:25) - Song about the bells of a Catholic church, a Protestant church, and a synagogue during which Dick mistakenly says "Catholic Chowers" instead of "Catholic Towers". The song is a "shaggy dog story", a drawn out explanation ending with the church bells finally playing in sequence, the effect being to ring out "Shave and a Haircut". – 4:22
"Lonesome Traveler" (4:16) - Tom thinks he is the classic radio detective "The Whistler", for he walks by night and he knows many things. Some of Tom's best guitar work is featured on this classic folk song. – 4:14
"Gnus" (2:29) - Tom has thought about being a big game hunter and hunting the vicious gnus. – 2:29
"The Incredible Jazz Banjoist" (4:24) - Tom attempts to play "Nola" and "Whispering" on the banjo. – 4:23
"I Talk to the Trees" (3:40) - Dick is singing the show tune from Paint Your Wagon but has to stop to explain to Tom what the song was about. Tom thinks the guy in the song sounds like a nut. – 3:40
"Flamenco" (2:51) - Tom attempts a flamenco guitar number from his "Spanish homeland". – 2:50