Tag for when a character hides their expression

Posted under Tags

When a character is holding back their emotion or faking their expression, what tag can we use for that post?
I'm not sure if a tag like this even exist.

For example, when a character looks sad or calm, but they're actually expressing something else.
It's usually shown in the same artwork, but only the reader can see it.

I thought of the "fake_smile" tag, but this doesn't work for characters who aren't smiling.

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