make a Horlicks of (something)

make a Horlicks of (something)

To ruin, bungle, or spoil something. Primarily heard in UK. I really made a Horlicks of that project at work—I'm going to get fired for sure! I'm afraid the accounting department made a complete Horlicks of these numbers. We'll need to re-tally the entire ledger.
See also: Horlicks, make, of

make a Horlicks of

make a mess of. British informal
1988 Joanna Trollope The Choir He thought privately that they would make a fearful horlicks of running the choir.
See also: Horlicks, make, of