The phrase "slap you silly" is a colloquial expression used to describe the act of hitting or striking someone so hard that it disorients them. However, there are many other ways to express a similar sentiment using different phrases or synonyms. Some alternate phrases include "knock you senseless," "give you a whack," "smack you upside the head," "give you a solid blow," "crack you one," "slap you around," "beat the tar out of you," "teach you a lesson," and "put you in your place." While these phrases may sound aggressive, it is important to remember that violence is never a solution to conflicts and that peaceful, non-violent communication is preferable.