Why was 6 afraid of 7?

I assume the answer is because 7 is a prime number and prime numbers can be very intimidating.

It's because 7 8 9.

Uhm I like Supernatural...

...a lot...

...an unhealthy amount.


But I mean, who doesn't have an unhealthy obsession with a made up character?

Or two...

Or an entire cast of made up characters?!?!