Sharpen Your Teeth is an album by the indie rock band Ugly Casanova. Brainchild of Modest Mouse lead singer Isaac Brock, Ugly Casanova was his attempt to try new methods and genres outside the realms of Modest Mouse. The album sees Brock performing on more instruments and using a more stripped down method of recording. The story given is that an eccentric character named Edgar Graham met with Modest Mouse while on tour. During their time together, Graham and the band recorded a few songs together, and Graham completely disappeared. In an attempt to get Graham to resurface, Brock took the recordings to Sub Pop Records, redid them in the studio, and had them released as Sharpen Your Teeth . A follow-up is highly unlikely due to contractual obligations Brock has with Modest Mouse's label Epic Records. It has since been revealed that Brock fabricated the story himself, using Ugly Casanova as a method of writing music whilst not being recognized instantly as Modest Mouse.

Sharpen Your Teeth es el primer álbum de la banda Ugly Casanova, grabado en el 2001 y lanzado un año después bajo Sub Pop Records.