眠(ねむ)ら()な()く()ち()ゃ() nemuranakucha。 I've gotta sleep. Literal Sleep must-do-[casual-なくちゃ]. なくちゃ is a casual contraction of なくてはいけない — the 'must' pattern stripped down. Extremely common in spoken Japanese. Muttered to oneself when sleepy. sleep~なきゃ/~なくちゃ (casual must)
眠(ねむ)ら()な()く()ち()ゃ() nemuranakucha。 I've gotta sleep. Literal Sleep must-do-[casual-なくちゃ]. なくちゃ is a casual contraction of なくてはいけない — the 'must' pattern stripped down. Extremely common in spoken Japanese. Muttered to oneself when sleepy. sleep~なきゃ/~なくちゃ (casual must)