Correction on the specific track: The most famous instance of a lyric sounding like "Gomu o tsukete" appears in the song or more popularly, the opening "Ashita no Joe" performed by Hideyuki Hirano for the 1980 movie or the TV series themes.
This phrase is sexually explicit and typically appears in adult-oriented dialogues, comedic skits, or NSFW language-learning examples. It implies a past instruction or reminder about safe sex, often in an intimate relationship context. gomu o tsukete thung iimashita yo ne 01 we top
In daily conversation: