1. an act of oral copulation involving the insertion of the penis into the toothless orifice of a female geriatric, whereupon, with her head completely submerged underwater, the act consummates with the geriatric fully satiated with seminal fluid

2. the imbibing of semen, from the male member, entirely underwater, in a jacuzzi or pool, by a feeble, elderly female.
Ex.:"I was about to climax into this bitch's mouth, when her Gma sauntered out, told the cunt to move over, grabbed my prick, and started sucking it to high-heaven, without ever coming up for a fuckin' breath of fresh air; the bitch gave me a fuckin' underwater gummy!"
by Michelleobama42 September 3, 2014
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