Here’s the description of this t-shirt from the website I found it on. It speaks for itself and requires no additional jokes.
|Japanese men are human, just like everyone else, and sometimes they have trouble controlling their inner urges. Here’s a wacky T-shirt that warns people who see it to beware of “nozoki” — peeping toms, who like to watch women secretly, in the bathroom and elsewhere. The text reads “Beware of Men Peeping” in clear, direct Japanese. Because the word “nozoki” is written with the hiragana writing system, it’s someething that only Japanese can read or understand (it’s illegible to Chinese, for example). A totally fun and wacky new design! This is a standard men’s shirt in athletic grey, available in size S-XL
You can buy one here.