The old Z80 CPUs were DIP packaged. Dual Inline Pins. There were 20 or so very sharp pins on each side of the rectangular chip. My boss came storming up one day and ranting about something or other. As we were not paying much attention to him, he slammed his fist down on the workbench. There was now a Z80 cpu firmly embedded into the side of his hand. He was angry, then puzzled, then in pain. He looked at the chip in his hand like "Where did THAT come from?". We are all cracking up and rolling around in our chairs. What did us in was when he asked for a "tweaker" little screwdriver to remove the chip. 6 of us rolled over to offer ours. He grabbed one and carefully pryed first one end out and then the other (the proper technique to remove from a socket), handed back the CPU and the tweaker, said "never mind" and broke up laughing with the rest of us.