Can refer to several different scenarios:
1. Where a service-provider affably declines being paid by casually swishing his hand in a "never mind" or "no worries --- no charge" gesture.
2. Where a service-recipient arrogantly/contemptuously declines to pay for services rendered by flippantly swishing his hand in a "forget it" or "don't trouble me" gesture.

3. Where a service-requester attempts to entice/persuade someone to assist/accommodate him by eagerly/pleadingly swishing a wad of cash in said would-be provider's direction.
Lustful-minded male bank teller: I'm a hopeless craver of lady-flesh, so I don't need any attractive female customer to beg me to give her a break on a service-charge --- all she has to do is show me her boobs or let me squeeze her butt, and I'll so totally "wave the fee" for her EVERY time.
by QuacksO October 26, 2020
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