How To Use Foul up In A Sentence

The team can't afford to foul up in this game.
He lit a cigarette and started to foul up the air with stinging yellow smoke.
The team can't afford to foul up in this game.
The team can't afford to foul up in this game.
He lit a cigarette and started to foul up the air with stinging yellow smoke.

But what the DIY folks don't usually mention, and many people don't realize, is that the rules of intestacy also apply if you foul up a DIY will. The Case Against Do-It-Yourself Wills
Nothing could foul up their militant spirit.
And sometimes it's been in-between, and you've managed to foul up whole organizations with misplaced papers missent messages, error, and changed minds and everything else you can think of. Supermind
The team can't afford to foul up in this game.
We can't afford to foul up this time.
The team can't afford to foul up in this game.
She's all I have, and I'm not going to... foul up and lose her again. WITHOUT REMORSE