How do you say weirdo in mandarin?

There isn't a direct one-to-one translation for "weirdo" in Mandarin. The closest you can get depends on the context and the specific meaning you want to convey. Here are some options:

1. 怪人 (guài rén): This literally means "strange person" and is the most common way to refer to someone considered "weird" in Mandarin.

2. 奇怪的人 (qíguài de rén): This literally means "strange person" and is similar to 怪人 but might be considered slightly more neutral.

3. 另类 (lìnglèi): This means "different kind" and can be used to describe someone who is unique or unconventional.

4. 古怪 (gǔguài): This means "eccentric" or "bizarre" and is often used for someone who is considered out of the ordinary.

5. 傻里傻气 (shǎ lǐ shǎ qì): This literally means "silly and silly" and is used to describe someone who is goofy or naive.

6. 不正常 (bù zhèngcháng): This literally means "not normal" and can be used to describe someone who is considered "weird" but in a negative way.

The best choice depends on the specific situation and the intended meaning.

Important: It's important to use these terms carefully and avoid using them in a hurtful or offensive way. Remember that language can be subjective, and what one person considers "weird" another might find charming or interesting.