That's the way she goes, it's really simple to roll 90 or above 3 times in a minute. If it's 3 times in a row your odds are about 1 in 750, if it's 3 times in a minute it could be significantly less depending on how many times in a minute you roll. I rolled over 50 16 times in a row, the odds of that are about 1 in 65000. Considering there are millions of rolls per day, I'm sure there are all sorts of crazy events happening. The most difficult thing is to beat the house after a million rolls. That would be extremely rare. Remeber when you roll above 89 twice in a row, odds are still 11% you will do it again.