"Buckle up!" - What a lame phrase...

A personal peeve is that phrase "buckle up!" - as prefacing something metaphorical like "We're in for a wild ride!"* 

This always strikes me as lame; in the same way as those signs in dull offices that say: "You don't have to be mad to work here - but it helps!"

The same kind of pseudo-jollity and false bonhomie; which, in practice, always seems to be affected by those most conspicuously lacking in either. 

*Or, in an earlier incarnation: "Fasten your seatbelts..!"