bollocks up

The verb has one meaning:

Meaning #1: make a mess of, destroy or ruin
  Synonyms: botch, bumble, fumble, botch up, muff, blow, flub, screw up, ball up, spoil, muck up, bungle, fluff, bollix, bollix up, bollocks, bobble, mishandle, louse up, foul up, mess up, fuck up