Piston Slap: Rev Hanging on the 5-speed Manual Accord?

Joel writes:

Hello Sajeev,

I am having an issue with my 2008 Honda Accord EX 5MT. I bought it with about 90,000 km (less than 60,000 miles) from a Honda dealer nine months ago. It was in good shape but was not babied. On the upshifts, there is a momentary … what could I call it … overrun? overspeed? Clutch in, accelerator off, the revs don’t drop right away; they almost seem to increase, but only for a moment.

On the downshifts, blipping requires more than a stab; I would call it a prod, a sustained stab of the accelerator.

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