also: いたきもちよい
i-adjective (yoi/ii class)
painful but pleasant
Describes a sensation that is slightly painful yet feels good, often used for massages, stretching, or acupressure.
このマッサージは痛気持ちいい。
This massage is painful but pleasant.
ストレッチで痛気持ちいいところまで伸ばす。
I stretch to the point where it's painfully pleasant.
Compound of 痛い (itai, 'painful') and 気持ちいい (kimochi ii, 'feels good'). The exact derivation is uncertain, but it likely arose as a casual expression to describe the mixed sensation of pain and pleasure.