How/when is くる used to mean difficult/unpleasant? In this video, a Japanese YouTuber says the following: > **** It seems like means here. Some other examples: > () **** Apparently this implies that the effects of the spicy food kicked in only after eating it (it seemed okay at the time). > AC/DC **** The speaker here doesn't like listening to loud rock music in the morning. Are these common usages of ? I haven't found anything in my usual dictionaries about it. Does anyone know how the usage arose?

>

Yes this is a verb that means "(feels) tough/heavy" or something like that.

> ()

Just as you guessed. The spicy stimulus "comes" to the nervous system a few moments after eating it.

> AC/DC

This one is context-dependent, but here vaguely refers to something positive and exciting. " rocks" is the closest word I know, but there may be a better translation.

And don't forget can also mean "in" or "hot" in the music industry:

> .
> is hot this week.

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In all the situations above, is often written as (or , etc.) to emphasize the slangy usage.