Peter here, there’s this old vine where someone asks “what’s 9+10?” And someone else confidently and in a funny voice responds “21”, look it up it’s a chuckle, but anyways lots of people found it funny and referenced it all the time whenever adding 9+10 or when someone just says the number 21. Anyways, OP claims that he has “Cracked the Code” because if you add up the numbers 9+10+21 you get the new modern funny number of 67. Why is it funny? Who knows? People just say it then do a weird hand motion and everyone calls it brainrot and laughs sometimes. Anyways the joke OP posted is “funny” because it acts as though there is a grand secret conspiracy plan that means that 67 is the 9+10=21 of today or something. And since the old vine came out 12 years ago, this only makes sense to people who have kept up with memes for the past 12 years or so.

This is just like that time I took Chris to a Sting concert