Because 7 8 9.
Because nobody gets it.
Because 7 ate 9. Credit to a guy I work with.
Instead of all this "how did you get in to my house " calling 9-11 business.
Becaauuuussseee 7 8(ate) 9. You get it huh?
Nothing because ghosts don't exist. Edit:Holy crap I just realized I didn't post this on /r/antijokes.
The sun exists.
Because 7 8 9. (7 ate 9)
Hey Microsoft, why is there no Windows 9? You've given us 7 and 8, and now you're skipping straight to 10?" "Well, to be completely honest, 7 8 9."