Strange effect from stressing AVR case

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#1
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I used a 15-UFBGA ATTiny44A and I am getting a very strange effect when I apply pressure to the circuit board it's on. The internal ADC on the temperature varies... a lot.

Any idea what could be causing this?

Here's a video: http://www.youtube.com/watch?v=v...

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Are your capacitors X5U dielectric? These are piezo electric.

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X5U? The only cap I have on there is the bypass cap.

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I guess it just an effect of touching the bare circuit board with your fingers.

Your body is one big antenna and the harder you press the more noise you inject into the pins.

I bet that if you apply bending forces in some other way other then between your fingers, the effect is gone.