The word ‘pretend’ has its etymological root in the Latin word praetendere, or ‘to allege as an excuse’; literally, ‘to stretch out’, from prae- (‘pre-‘) + tendere (‘to stretch’). Pretend literarily means ‘to give a false appearance of being, possessing, or performing.’
The behavior is rooted in our cheating tendency. It’s not approved in social and spiritual settings.