From Longman Dictionary of Contemporary Englishbe a sightbe a sight (also look a sight)UNTIDYSTRANGE to look very funny or stupid, or very untidy or unpleasant We’d had an all-night party, and the place looked a bit of a sight. → sight
Examples from the Corpus
be a sight• The greatest variety of birds are sighted in late April and May and in late August and September.• New York's new Health Commissioner is a sight.• Wouldn't it be a sight easier if they kept their passion for a paid mistress?• It was a sight and a situation long to be remembered.• It was a sight beyond his wildest nightmare.• In the wild, they can often be sighted migrating in bevies of a hundred or more birds.• A school of sperm whales is sighted.• You, you were sighted on seven nineteen, you had sufficient time to get appropriate staff permit. 