I've done three consecutive eight balls once and only once, it was on a 7ft bar table.
I was playing a hot-headed kind of guy. Lately he'd been struggling to control himself and stay calm. Anyway, we were just playing for sh*ts and giggles.
He racked the first rack and I broke from the right to the second ball. The eight ball made a beeline for the left side pocket and dropped in. My opponent let out a sigh, and said "good game".
He racked again, same rack, and I broke exactly as before and Bingo, the eight goes in the left side. My opponent yells WTF!, throws in a couple of g*d damnits and was now visibly exasperated.
He racked again, looked at me and said "F you, you're mine now! You won't make it this time." Well I broke the same again. The eight ball headed for the side again then it got kicked off the line by another ball.....straight into a kiss off a ball, smack into the corner.
I laughed so hard! My opponent went off on a total conniption and left the pub. I could swear I saw smoke coming out from under his hat.
Fats