Partly brought to mind by Gryphon's idea for improving TLOK book 1, but also a problem I've encountered elsewhere; given a situation where there's a character who needs a thorough reeducation via fists, but it would be a bit out-of-character for whomever is around to do so, my question is: How far out of bounds is acceptable (or is at acceptable at all) for a character to do something they normally wouldn't, when that something is a beatdown?