droll
DROHLadjMeaning funny in an odd, quiet or dry way
Memory hook a DROLL ROLL. Baker Omar gives a bread roll a mustache and, with a perfectly straight face, bows: “Sir Roll, at your service.” His joke is droll.
The old fisherman had a droll way of telling stories, never smiling while everyone else laughed.
In context The comedian was not loud or silly but droll; he spoke in a flat, quiet voice and let the oddness of his remarks do the rest.
Similar amusing, whimsical, dry, comical
Opposite serious, dull
From French drôle, “funny, strange.”