My baby is a rare kind she really sends shivers up my spine my baby is good for me my baby is the one for me. Chorus. mercy. is what my baby does to me. mercy!...repeat Mercy how my baby pleases me she's just as swinging as she can be. she sure doesn't know what she does for me. Chorus. My baby is a rare kind she really sends shivers up my spine when she whispers that she loves me so she makes my pulse go go go! Chorus.