The quote humorously questions the term "pre-board" used in air travel, playfully pointing out the irony that it suggests getting on the plane before actually getting on the plane. It highlights the sometimes illogical or confusing aspects of travel processes.
It provides a playful play on words, advising not to worry or give attention to trivial matters (petty things) and not to touch or interact with sweaty objects, implying a lighthearted approach to life's challenges and discomforts.