All American Chump is a 1936 American comedy film produced by MGM, directed by Edwin L. Marin and written by Lawrence Kimble. The film stars Stuart Erwin, Robert Armstrong, Betty Furness, Edmund Gwenn and Harvey Stephens.

Plot

When a traveling carnival comes to a small farming town, so many of the locals are cheated that they trash the carnival. Promoter Bill Hogan goes to the local bank to raise money to get out of town before the carnival's bills catch up with it, and sees that instead of an adding machine the bank is using Elmer Lamb, a meek clerk who is a calculating prodigy. Hogan hires him as "Chain Lightning" and displays Elmer in competition with an adding machine, but the public is not interested. Then the sheriff arrives and attaches the carnival's assets.