looks quite cunning

[keannu]

What do you call a person who doesn't work hard or study hard, trying every means like this way or that?
It can be any kind of laziness, so such a person looks quite cunning.
We have a slang word to tease such person in Korean, and I'm curious about its English counterpart.

[JTRiff]

What do you call a person who doesn't work hard or study hard?
>>> ?(trying every means like this way or that?)
Lazybones.

It can be any kind of laziness, so such a person can appear to be cunning.(Really? How?)
We have a slang word to tease such (a) person in Korean, I'm curious about English counterparts.
Couch Potato
Born rich (<joke)

[keannu]

Only a grammar question.
ex)We have a slang word to tease such (a) person in Korean , I'm curious about English counterparts.
I don't think you can insert a comma here to join two sentences without any conjuction. Does the following make sense?
ex)I eat it, he eats it.
I also make this kind of sentences a lot of times, but just for fast-typing, and I know it's wrong.