tongue oil
A "snake oil" product intended to enhance da health, longevity, and "slippery" status of da infamous two-pronged speaking-appendage of a habitually-less-than-truthful person.
Since tongue oil is intended for a forked food-manipulator like a snake has, perhaps this same extract-of-cobra elixir (or maybe it could be spelled "elicksir" in this case, since dat's one of da main purposes of da bodily organ on which said restorative lubricant is used) could also be applied to someone's "trouser snake" by his romantic partner, to preserve said organ's smooth/supple/spongy qualities and thus maintain a pleasant "mouth feel" for said main squeeze when administering a blowjob. One would hope dat said topical ointment possesses a pleasant-or-at-least-neutral flavor, since performing fellatio on a body-part to which you just applied a rejuvenating substance would literally be giving you a taste of your own medicine!