99.99% positive = "So, you don't know."

[Martin X. Moleski, SJ]

There was a very funny Ball Park Frank commercial running with a promo for the Discovery special on August 19.

The video is apparently no longer available on YouTube or elsewhere.  Baby Brezza Blog has a transcript:

Three guys are standing around at a BBQ, as guy #1 says that he is "99.9% sure" about a particular baseball statistic.  Whereupon guy #2 questions his certainty by asking, "Sure?" Guy #1 then responds, "I'm 99.9% positive."
Guy #3 chimes in and says, "So you don't know."
Guy #1 now replies, "I'm 99.99999% sure."
Guy #3 then says, "If you don't know, you don't know.  It's fine."

[richie conroy]

Haha Marty

It's a old saying but a good one, 99% sure, when it's the 1% that was right

That's why us Scouser's  now say "in Theory" because ur never wrong when you say that haha  ;D