YOU SAID:

Both hands on the back when a tap it

INTO JAPANESE

タップすると両手が背中に

BACK INTO ENGLISH

Tap on both hands on back

INTO JAPANESE

背中の両手をタップします

BACK INTO ENGLISH

Tap both hands on back

INTO JAPANESE

背中を両手でたたく

BACK INTO ENGLISH

Hit your back with both hands

INTO JAPANESE

両手で背中を打つ

BACK INTO ENGLISH

Hit your back with both hands