YOU SAID:

I like eating faeces while playing piano

INTO JAPANESE

ピアノを弾きながら糞を食べるのが好きです

BACK INTO ENGLISH

I like to eat poop while playing the piano

INTO JAPANESE

ピアノを弾きながらうんちを食べるのが好きです

BACK INTO ENGLISH

I like to eat poop while playing the piano