vintage
Explanation
The Joke
A man at dinner explains that "a lot of foods and drinks get better with time" -- wine and cheese improve as they age. His companion observes that his glass appears to contain cherry-flavored Gatorade, which the man spins as a positive: "Even old MMA sock, soaked in Gatorade, gets better with time. The Historobater Wins recorded it as embalming fluid." The conversation continues with increasingly absurd claims about aging foods, noting that jeans age well, avocados are "three times more expensive than wine," and concluding that "you and I are any different."
When the woman asks what he is getting her for their anniversary, he suggests "a nice Mulligan" -- essentially asking for a do-over.
The Humor
The comic satirizes food and wine snobbery by taking the concept of "aging improves things" to its absurd logical extreme. The man starts from the reasonable premise that wine and cheese get better with age, but then applies this logic universally to argue that everything -- including relationships -- must improve simply by existing for a long time. The punchline undercuts this entirely: if his relationship were truly like fine wine, he would not need a "Mulligan" (a golf term for a do-over). The joke suggests that some things -- like this relationship -- do not, in fact, improve with age.
References
A "Mulligan" is an informal golf term for a second chance to perform an action, usually re-doing a bad shot without counting the penalty. It is colloquially used to mean a do-over in any context.