noun, verb, crapped, crap⋅ping.| 1. | Vulgar.
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| 2. | Slang: Sometimes Vulgar.
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| 3. | refuse; rubbish; junk; litter: Will you clean up that crap! |
| 4. | Vulgar. to defecate. |
| 5. | Slang: Sometimes Vulgar. to talk nonsense to; attempt to deceive. |
| 6. | crap around, Slang: Sometimes Vulgar.
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| 7. | crap on, Slang: Sometimes Vulgar.
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| 8. | crap up, Slang: Sometimes Vulgar. to botch, ruin, or cheapen; make a mess of. |

crap up
Burden or clutter up, as in Jane crapped up the garden with plastic pink flamingos. [c. 1946]
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]