I’m sixty years of age. That’s 16 Celsius.

Carlin’s joke hinges on a deliberate category error: converting an age expressed in years into degrees Celsius, as if the number “60” were a temperature rather than a measure of time. The humor comes from the absurdity of treating numerical labels as interchangeable across systems, and it echoes Carlin’s broader comic interest in how language and measurement conventions shape (and sometimes distort) meaning. By “translating” his age into Celsius, he also lightly satirizes Americans’ periodic confusion about metric units and the false precision of numerical comparisons divorced from context.