foul-up

foul-up  {n.}

(stress on "foul")

1.  {informal}

A confused situation; confusion; mistake.

The luncheon was handled with only one or two foul-ups.

2.  {informal}

A breakdown.

There was a foul-up in his car's steering mechanism.

3.  {slang}

A person who fouls up or mixes things.