Now, I know you are all gonna be absolutely
shocked by this, but the joke makes no sense. Why would pin codes get more complex as time goes on? It's not like a username for an email, which might've been an interesting joke, but a pin is a 4 digit code that doesn't have to be unique. It's not like you assign a PIN number to your card and the banks like,"sorry that ones taken."
Might've worked for something else like a username though. Something like,
"Wow, my best friend from 500 in the future emailed me! Unsurprisingly, his email is ctucker1248502$10;729573819:7301);810:&;710:'
Dow@qldjf.com"
Not really funny, but still, ya get what I'm saying.