sarcasm-impaired

Sarcasm-impaired describes someone who struggles to recognize or interpret sarcasm, taking ironic or mocking statements at face value.

The term follows the pattern of other "-impaired" constructions but is used humorously rather than clinically.

My sarcasm-impaired coworker thought I was genuinely excited about the mandatory team-building retreat.

It can also describe communication contexts where sarcasm fails to land, such as text messages or emails lacking tonal cues.