허우적 -- something like a meaning of "wriggle"
거리는 -- subject marker of 거리다, which, when combined with a sounding noun, has a meaning of "to do"
스튜핏 -- a translated word of "stupid"
괜찮니 -- a verb form of 괜찮다, which means "to be fine/alright"
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Good day. / 좋은 하늘.