Liars

Now, this seems to be a very vague subject, So, I'll narrow it down.

Flattering comments are wonderful. When they are deserved.

If someone gives you a compliment such as, "This is the best catering food I've ever tasted," and then turn around and chooses the caterer they tried right before you, when everything about the two caterers is the same, is lying.

You pick whats best, ESPECIALLY if everything else is the same. Price, notoriety, and presentation are the same.

Don't tell someone they're the best and have actions that show the opposite.

That. Is. Called. LYING.