Its more of a fail that there are actually laws against ‘vibrators’ in some areas that makes it necessary for sellers to claim its something else.

Apparently in one state, there is a law saying you can not own more than 4 of them. So, the taxpayers paid for lawmakers to sit around and discuss the issue to a point where they concluded that 5 was too many, while limiting it to 3 was not enough. Frank Zappa spoke about it several years ago.