スパンキング お尻ペンペン お尻ぺんぺん お尻叩き 打尻 打屁股
When a character is in the process of slapping their hand or some other tool against another's ass as a form of punishment or erotic roleplay.
Note that spankings can be administered by oneself as well, covered under spanking self.
If the ass is red or marked, include the spanked tag as well.
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