YOU SAID:
To be a fly in the roof.
INTO JAPANESE
屋根にフライにします。
BACK INTO ENGLISH
On the roof to fly.
INTO JAPANESE
屋根の上に飛ぶ。
BACK INTO ENGLISH
Fly on the roof.
INTO JAPANESE
屋上だ
BACK INTO ENGLISH
On the roof.
INTO JAPANESE
屋上だ
it is unlikely that this phrase will ever reach equilibrium