bollocks up

rude slang To ruin or make a mess of something. "Bollocks" is a vulgar slang term for testicles. A noun or pronoun can be used between "bollocks" and "up." Primarily heard in UK. Boy, you really bollocksed up this report—I'm not sure I can even fix it. Take your time so you don't bollocks it up!

rude slang Bungled; messed up. "Bollocks" is a vulgar slang term for testicles. Primarily heard in UK. The report came out of the printer really bollocksed up. The pages are all out of order now, and I think a whole section is missing! It's become pretty apparent by now that the whole project has gotten completely bollocksed up.