When I studied electrical engineering at college, the lecturer once detailed the difference between TTL and CMOS logic chips, including how easily susceptible to ESD CMOS chips were.
He rolled it around in his hands and plugged it into his breadboard. It still worked.
He vigorously wiped his feet on the carpet, taking a couple of laps up and down his work area, before plugging it into his breadboard. It still worked.
He then passed 48V across it for a few seconds from his bench PSU (the chip was rated at 3.something to 8,something volts, IIRC) and it STILL worked.
Feeling embarrassed now, he started up his desktop Van De Graaff, blu-tacked the chip to his discharge wand and zapped the thing with 200kV. THAT got the result he was after.