like a drowned rat
Soaking wet (and usually dirty and unkempt as well). She came in from the storm looking like a drowned rat. The poor little guy stood shivering on the beach like a drowned rat.
like a drowned rat
Also, wet as a drowned rat. Soaking wet and utterly bedraggled, as in When she came in out of the rain she looked like a drowned rat. This simile appeared in Latin nearly 2,000 years ago, and in English about the year 1500.
like a drowned rat
extremely wet and bedraggled.like a drowned ˈrat
(informal) very wet: She came in from the storm looking like a drowned rat.