YOU SAID:

pat my back then scratch it please and thanks

INTO JAPANESE

私の背中を軽くたたいて、それを引っかいてくださいそして感謝します

BACK INTO ENGLISH

Tap my back and scratch it and thank you

INTO JAPANESE

背中を軽くたたいて引っかいてくれてありがとう

BACK INTO ENGLISH

Thank you for tapping my back and scratching

INTO JAPANESE

背中を軽くたたいて引っ掻いてくれてありがとう

BACK INTO ENGLISH

Thank you for tapping my back and scratching