YOU SAID:
sponge bob is not a contraceptive
INTO JAPANESE
スポンジ ・ ボブは避妊ではないです。
BACK INTO ENGLISH
SpongeBob SquarePants is not birth control.
INTO JAPANESE
スポンジボブは避妊ではありません。
BACK INTO ENGLISH
SpongeBob is not a contraceptive.
INTO JAPANESE
スポンジは避妊ではありません。
BACK INTO ENGLISH
SpongeBob is not a contraceptive.
That didn't even make that much sense in English.