TO HAVE AN ITCH IN THE BELLY, verb. phr. (venery).—To be sexually excited; to have a MUST (q.v.). Also TO ITCH.

1

  1675.  COTTON, Burlesque upon Burlesque: or, The Scoffer Scofft, 4th ed. 1725, p. 173.

        Why then, to cure thy ITCHING,
Jove, thou now going art a bitching.

2

  1720.  D’URFEY, Wit and Mirth; or Pills to Purge Melancholy, vi., 324.

        Each has an ITCH IN HER BELLY,
  To play with the scarlet hue.

3