https://dic.pixiv.net/a/%E3%83%95%E3%82%A7%E3%83%AB%E3%82%B7%E3%83%BC%E3%83%BB%E3%83%AD%E3%83%AD#h2_0
>The "paa-paa" sound, pronounced with a unique intonation, is rich in Felsie ingredients and is said to have the effect of revitalizing the body, nourishing and strengthening the body, and relieving accumulated fatigue ( please note that effects may vary from person to person ).