Meaning:

“显眼” means “conspicuous,” or “eye-catching,” while “包” has the literal meaning of “bun,” and taken together is a Chinese slang term referring to a person with certain traits as defined by the words preceding it. A recent trending meme on Chinese social media, this term has been used to describe showbiz idols who reveal themselves to be goofballs during variety shows. More often used in a positive light, this term also defines hilarious things or behaviors that give people a good laugh.

Example:

A: 你姐的孩子上大学了吧？

Nǐjiě de háizi shàng dàxué le ba？

Is your elder sister’s son in college now?

B: 是，过完暑假大二了。这小子，从小是个显眼包，特别爱搞怪，现在还这样。

Shì，guòwán shǔjià dà’èr le。Zhè xiǎozǐ，cóngxiǎo shì ge xiǎnyǎnbāo，tèbié ài gǎoguài，xiànzài hái zhèyàng。

Yeah, he’ll be a sophomore after summer vacation. He’s a goofball and did all kinds of hilarious things when he was a kid, and things haven’t changed a bit.