Frida herself was no saint, indulging in multiple adventures with Diego's mistresses and a much-publicized series of trysts with exiled Russian revolutionary Leon Trotsky in the late 1930s.

FORBES: Frida On The Block

Other candidates for Twitter feuds range from Dean Martin and Jerry Lewis to Josef Stalin and Leon Trotsky to those famous old epic-movie friends turned enemies, Ben-Hur and Messala.

WSJ: Moving Targets: Queenan Imagines Twitter Feuds Involving Burr, Capone