Oh! I know about this! It's the "fuzzy" feeling you get when you touch a MBP when it's plugged in!
It only happens when you're using the two-prong "duck bill" on the power adapter itself. If you use a power cord with a three-prong plug instead of the two-prong duck bill, the feeling isn't present.
It only happens when you're using the two-prong "duck bill" on the power adapter itself. If you use a power cord with a three-prong plug instead of the two-prong duck bill, the feeling isn't present.