muck up (
http://definr.com/muck up)
v 1: make a mess of, destroy or ruin [syn:
botch,
bumble,
fumble,
botch up,
muff,
blow,
flub,
screw up, {ball
up},
spoil,
bungle,
fluff,
bollix,
bollix up,
bollocks,
bollocks up,
bobble,
mishandle, {louse
up},
foul up,
mess up,
fuck up]
2: soil with mud, muck, or mire; "The child mucked up his shirt
while playing ball in the garden" [syn:
mire,
muck,
mud]