...And for all the sanctimonious blather going around about perjury, just as it was 20 years ago with Mr. Clinton, not every lie told under oath is perjury, and not every instance of perjury would be prosecuted. There are plenty of cases where acts that are, technically, crimes, but in reality no one is ever prosecuted for. (This is similar to mishandling classified documents. If everyone who mishandled classified matter were prosecuted, the jails would be overflowing with aerospace engineers, but in reality, most cases are not treated as crimes, despite what you might have heard in the last few years.)
If evidence were uncovered that showed Brett Kavanaugh lied about sexually assaulting women, I would not be surprised if he were impeached, and possibly even prosecuted after being removed from the bench. If Brett Kavanaugh lied about drinking, there is no way he would be convicted in the Senate, and if somehow the case ended up as a criminal prosecution, any conviction would be thrown out as an unconstitutional instance of politically motivated selective prosecution.
The sanctimony is strong in this case, but in reality no one would ever under any circumstances be prosecuted for lying about the meaning of "boof" in their high school yearbook.