Meaning of "look what the ... dragged in"

[Farzana]

English Language Tests, Intermediate level

ESL/EFL Test #392 "English Slang Idioms (126)", question 1

She couldn't help snidely saying "look what the ......... dragged in" when the presenter finally arrived 30 minutes after he was supposed to.

(a) cat
(b) mouse
(c) dog
(d) police

English Language Tests, Intermediate level

ESL/EFL Test #392 "English Slang Idioms (126)", answer 1

She couldn't help snidely saying "look what the cat dragged in" when the presenter finally arrived 30 minutes after he was supposed to.

Correct answer: (a) cat
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Sir,
I couldn't understand the meaning "look what the ........ dragged in"

[Linda]

Hello,
This is an idiom that refers to someone who looks unkempt/in bad shape or form. In this case, it refers to someone who is very late and probably looks frazzled.
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