The only thing I can think of that could make that bit remotely close to true would be someone like Abdullah, when he was wrestling regularly, IF you count each time he took the blade to his head trying to open himself up. He would go palm-to-forhead after every punch his opponent threw. I remember a couple of Brody bouts where this was particularly noticable.
(Can you imagine having a blade taped in the palm of your hand? That's nuts, IMO..you forget it's there and you cut yourself, your opponent, and anyone that wants to shake hands...)
From what I saw, he would blade himself dozens of times in a single match. He probably had no choice because it would have taken several cuts to get through all that scar tissue. So 25-30 shots with the blade in a single week, in Abby's case, when he was wrestling regularly, is probably correct and even a bit on the low end.
Overall, this is an epic LOL just designed to throw it out there that he wants his life story done in movie form. Good luck with that one, hulkie...