Crackers,

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  crackers \crackers\ adj.
     crazy. [informal or slang]
  
     Syn: balmy, barmy, bats, batty, bonkers, buggy, cracked,
          daft, dotty, fruity, haywire, kooky, kookie, loco,
          loony, loopy, nuts, nutty, wacky.


          [WordNet 1.5]

From WordNet (r) 2.0 [wn]:

  crackers
       adj : informal or slang terms for mentally irregular; "it used to
             drive my husband balmy" [syn: {balmy}, {barmy}, {bats},
              {batty}, {bonkers}, {buggy}, {cracked}, {daft}, {dotty},
              {fruity}, {haywire}, {kooky}, {kookie}, {loco}, {loony},
              {loopy}, {nuts}, {nutty}, {round the bend}, {around
             the bend}, {wacky}, {whacky}]