Is there a name for this feeling? With the intent of being seen as a big shot, a person induces unsuspecting observers to underestimate them by intentionally failing in trivial tasks but then successfully completing more complex tasks.
The emotions may include: duplicitousness, slipperiness, artfulness, craftiness, deviousness, wiliness, cunningness, deceitfulness, slyness, sneakiness, crookedness, vanity, haughtiness, pretentiousness, affectation, conceitedness, smugness, superciliousness, bumptiousness, condescension, obstreperousness, grandiosity, hubris.