OK, I've got one. Two monks are standing in front of a flagpole. One says to the other, "that flag sure is flapping hard in this wind". The other monk says, "The flag is not moving; the wind is." The Buddha happens to overhear this conversation and interjects, "the flag is not moving and the wind is not moving -- your minds are moving."
What--? that one kills 'em down at the Zendo.
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I was gonna send a robot back in time, but I got high.