In Japan, the phrase "Gomu o tsukete" is a direct request for protection. Culturally, communication around sex in Japan can often be indirect, but this specific phrase is a hallmark of the "casual but responsible" phase of dating.
While this string of words might sound like a misremembered line from One Piece (Gomu Gomu no Mi) or a direct translation of “apply rubber,” it has evolved into a specific sub-niche within the world of high-end figure restoration, custom action figure creation, and limited-run collectibles. gomu o tsukete to exclusive