I have the body of an eighteen year old. I keep it in the fridge.

The joke begins with a stock boast about vitality—claiming to possess the body of an eighteen-year-old—then detonates it by treating the phrase literally, as if the “body” were a stored object. Milligan’s punchline uses shock and incongruity to satirize vanity, nostalgia, and the cultural obsession with youth. By turning a metaphor into a darkly comic image, he exposes how absurd it is to equate worth with physical youthfulness. The line also exemplifies Milligan’s broader comic method: taking ordinary language at face value and pushing it into the surreal, forcing the audience to re-hear clichés as strange and unstable.