emmm...its all similar express.. but we use like this when we talk with friend...when very cold day...my friend call to me. so my friend ask to me.. how about the weather? cold.....errrr cold........aaaaaaaaaaaakkkkkk colddddddd..

"춥다, 추워, 춥다고" "(It's) cold, (I'm) cold, (I said I'm) cold" 추워? - (Are you) cold?, 춥다고? - (Did you said) you are cold?