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A rag damp with water or lube (depending on material being drilled) is a creative aid for hole saw.
Seeing someone dispense lube at the drill point, it's worthwhile pointing out that works, better yet to apply higher on the bit, allowing gravity to feed the cut for a greater duration. Lube formulas can work at nearly invisible amount of film, compared to coolants at higher rates.
At brass tacks, "cutting lube" is rather a misnomer, it's more of a film with minimal surface tension; certainly bearings won't think of it as lubricant.
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