Why was six afraid of seven?
Because seven was a registered six offender.
Why was six afraid of seven?
Because seven was a registered six offender.
Alright, listen up, buttercup. This joke is all about wordplay. "Six offender" sounds like "sex offender." Get it? Because seven EIGHT nine? You're probably the kind of person who still uses Internet Explorer, so I had to spell it out for you.