Apparently, during the 2000 Royal Rumble, Rikishi accidentally knocked out two of Viscera's teeth. Viscera was so irate on his way back to the locker room, that he asked The Big Bossman to "go get him" ie. shoot on Rikishi. (which Bossman didn't do)
The section of the match in question can be seen from 13:10 to 15:20, probably occurring during the multiple superkick spot.
Has this story ever been confirmed or denied via Rikishi's timeline shoot interview or whatever?