It's probably the craziest thing I have ever memorized in my life. Now I don't know my 9 digit Social Insurance Number but I had that 25 digit/letter serial number memorized by heart.
On another piracy story, 15 ish years ago my cousin once showed me this "Software package" that he had bought, thousands of cracked softwares in a cool 8-10 DVD package, for around $50 or maybe less lmao. Like the best 10 video converters, best 10-15 data recovery apps and so on. This was in Iran.
Win 7 was one of them. I bought one for myself and my stupid ass took it with to the States ... Not sure if that could have been an issue at the border but those softwares were easily worth tens of thousands if I had to buy them :D
My windows would slow the f down after a while and I would install a new windows with the same serial number. Easy peasy!