foul up

foul up  {v.},  {informal}
1. To make dirty.
The birds fouled up his newly washed car.
2. To tangle up.
He tried to throw a lasso but he got the rope all fouled up.
3. To ruin or spoil by stupid mistakes; botch.
He fouled the whole play up by forgetting his part.
4. To make a mistake; to blunder.
Blue suit and brown socks! He had fouled up again.
5. To go wrong.
Why do some people foul up and become criminals?
Categories: informal verb

'foul up' on video