flat + attitude: something flat does not attract us as it is very common. So you will obviously give trite remarks.
or we can think of plastic: it is veru cheap and of very little value just like platitude
Latitudes vary from place to place ...whereas Platitude is common to all ..i.e. COMMONPLACE...ORDINARY ... TRITE...
Take it as (PLATE + ATTITUDE) this hungry man was throwing the PLATE on server face bcos of serving late. Chef is obviously strongly REMARKING towards his ATTITUDE.
The word 'platitude' is derived from the word 'plat',which is the French version of the word 'flat' and means literally "a flat remark.
platitude=pl(please) + attitutde ppl r always giving weak comments
Platitude = please + attitude; please attitude is always is always shows poor behavior.