[The reaction is somewhat of a surprise, but not something he is unfamiliar with as it were. The mocking clapping, when Jetfire answers, clearly doesn't affect him at all.]

All beings are individuals, I do not think it unreasonable to point out and argue this fact when you seem disinclined to respect it.

Pyramids? [Brief, not-quite-a-second's pause.] I'm quite aware that there are structures in general on my planet, and, I assume, on Earth as well, that could be termed 'pyramids', so why would I deny their existence?

[Jetfire doesn't sound as confused as Bartimaneus comment made him, merely more mildly curious than anything... But he hadn't been on Earth for long enough to have time to to be able to now realize they were probably talking of particular pyramids.]