The names Brian and Bryan are now the male version of Karen ... because those names are plummeting in popularity, and the switch appears to be tied to 3 notorious owners of the monikers.
Admittedly, this would be rock bottom on the list of alleged crimes committed by Bryan Kohberger, Brian Laundrie and Brian Walshe ... however, a spokesperson for Babynames.com tells TMZ they're seeing a steep decrease in those names.
We're told since last August, not a single user added "Brian" to their list of favorites. While it had already been slowly decreasing in popularity -- it was considered "dated" from the 1970s -- it's now fallen off a cliff.
As for "Bryan," we're told it stands a little more popular, but has decreased by about 10 percent recently ... and it might be too early to see the full effects of the Idaho students case and the alleged quadruple murderer.