The Collaborative International Dictionary of English v.0.48:

Fub \Fub\, Fubs \Fubs\, n. [Cf. Fob a pocket.]
   A plump young person or child. [Obs.] --Smart.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fub \Fub\, v. t. [The same word as fob to cheat.]
   To put off by trickery; to cheat. [Obs.]
   [1913 Webster]

         I have been fubbed off, and fubbed off, and fabbed off,
         from this day to that day.               --Shak.
   [1913 Webster]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

FUB
       Freie Universitaet Berlin (org.)