The word that came to my mind was "dry wit". A search of "dry wit" will bring you to Laurel's answer. Laurel's answer is better anyway, and more common.

dry
14. Humorous in an understated or unemotional way: dry wit.
definition of dry

The word that came to my mind was "dry wit". A search of "dry wit" will bring you to Laurel's answer. Laurel's answer is better anyway, and more common.

dry
14. Humorous in an understated or unemotional way: dry wit.
definition of dry