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Related to crap up: crap game
1. Burden or clutter up, as in Jane crapped up the garden with plastic pink flamingos. [c. 1946]
2. Ruin or foul up, as in I've really crapped up this speech; can I just start over again? This idiom employs crap in the sense of "defecate." [ Vulgar slang; c. 1950]
v. Vulgar Slang
1. To bungle or make a mess of something: I really crapped up the project. It looks like they crapped it up again.
2. To fail to function properly: My computer crapped up on me, and I had to shut it down.