flipping a single cigarette singular when opening a new pack is typically seen as a symbol of good luck or protection, created by placing one cigarette upside down in the pack and leaving Two-in-one Cigarette case Lighter, flip
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The confusion stems from the fact that liquid PCPs pungent smell is reminiscent of formaldehyde (and that so many apparently were familiar with the smell of embalming fluid speaks volumes for the dire circumstances in which the sherm originated)

"I remember one time she tipped $0.89 on a bacon egg and cheese biscuit and coffee," recalled a viewer on Reddit, who added that the waitress had to return to Ray's table three times
North of Zambia, in Ethiopia, the remains of two ceramic waterpipe bowls were recovered from Lalibela Cave and dated to 640500 BP
Some may think a higher resistance atomizer will produce more heat and therefore more vapour, but its the power that is most important
Lovely Me: The Life of Jacqueline Susann

This habit comes directly from cigarette smoking and has no place in cigar culture