Data blinks, and his brow scrunches back down in a close approximation of confusion.

Humans are still, after all these years he's spent in starfleet, quite mystifying. He briefly replays the memory files of their conversation over, trying to find the point where he said anything funny, but through his (incredibly limited) understanding of comedy, he comes up blank.

"Sir, if I may ask," His head tilts, just slightly. A little twitch. He sound genuinely curious, which is just a smidgen out-of-place. "What is it that you find so humorous?"