glib
Pronunciation: /glib/
adjective (glibber, glibbest)
(Of words or the person speaking them) fluent and voluble but insincere and shallow: she was careful not to let the answer sound too glib
Origin
late 16th century (also in the sense 'smooth, unimpeded'): ultimately of Germanic origin; related to Dutch glibberig 'slippery' and German glibberig 'slimy'.
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Since my comments are glib
And I'm inclined to fib,
It should be no surprise
Another wins the prize.