1. To engage in sexual intercourse in a non-traditional location or position whereby great care, skill and balance is required to avoid falling, twisting or otherwise resulting in bodily injury.

2. A mechanical term used to refer to the installation of vehicle tires onto wheel rims and weight balancing the wheel for even tread wear.
1. Dan and Carla spiced up their lovemaking by having sex on the roof of their neighbors house. They were able to get off without injury with a successful mount and balance.

2. Frank bough some new shoes for his ride and made sure he paid extra for the mount and balance.
by Eaton Holgoode September 30, 2015
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Play-on-words term for da pre-intercourse positioning of either yourself or your tire-shop worker --- depending on whether you’re gonna be doing it cowgirl or doggy-style, respectively --- dat would occur prior to your having sex wif him in exchange for his installing one or more tires on your car/truck and applying whatever wheel-weights are necessary. Said “bouncy-bouncy” is intended to recompense said automotive-servicing employee for his anti-wobble labors to ensure dat your VEHICLE doesn’t “do da bouncy-bouncy” as you travel down da road afterwards, and is performed due to your possessing insufficient funds in your bank account to cover da costs of said vehicle-servicing, and thus a check dat you’d write to him would ITSELF do some major “bouncing” when he tried to deposit it.
One should be wary of accepting a “mounting and balancing” deal wif a cute chick who beamingly offers you said “service for servicing” --- or perhaps dat should be spelled, “cervix for servicing” --- trade… if you naively agree to perform da wheel-repair work BEFORE said hottie allows you said promised “ultimate favor” instead of insisting dat she give you her own “servicing” first, it would be all too easy for her to simply drive off afterwards without actually spreading her legs for you!
by QuacksO October 8, 2023
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