Hmmm, I think there must be some local influence in this too. Growing up in the UK, I can recall hearing gazillion far more frequently than zillion.

Also, younger children would often also say squillion for a number even bigger than (ga)zillion.

Sometimes unintended typos pwn the prior accepted spelling.

> It's also perhaps worth noting that the -b- key and the -z- key sit right next to one another on the 1895 Linotype board

It's like `zomg` or `pwn`

Frys most iconic offer: https://youtu.be/whUvTIzcE_U

„One Jillion Dollars!“

How very cromulent.