I’ve successfully used the diaphragm for more than 30 years, and considering that it took me only 2 weeks to get pregnant the one time we tried on purpose, I’m probably pretty fertile.
Also, old ones can be used like Diva cups when you want to go swimming during your period.
The characters don’t look alike, but the words sound alike in at least one Chinese dialect, so it’s possible there was some mistranslation somewhere, and Penny really did get the wrong tattoo. On the other hand, Sheldon doesn’t know as much about languages as he thinks he knows, so he could have learned the wrong character, albeit, he probably remembers it from a Chinese menu, so it’s doubtful.
FWIW, I love the mistakes Sheldon makes with languages. They’re making fun of other shows with a stereotypical genius who knows 6 or 7 languages-- which it is possible to know. My mother knows 8. But she’s a linguist, and three languages she learned in childhood, one she only reads and writes, and the rest are in the same language family, and she had been in the countries where they are spoken, so she’s had a chance to use them (and I think there may be a second she only reads and writes as well). Plus, that’s not even counting Hebrew, which she has just they typical American Jew’s grasp of.
The only language Sheldon seems to know well is Latin, which makes perfect sense. Scientists need to know Latin.
'Course, Howard said that. His knowledge of religion is abysmal. He said Jesus was the last Jew to do crunches. He forgot about Mark Spitz and that guy in the WWF.