What does it mean to cowbell someone?

To "cowbell" someone typically means to unexpectedly or humorously interrupt them, often by drawing attention to something or adding unnecessary emphasis, similar to the way a cowbell stands out in music. The term gained popularity from a famous "Saturday Night Live" sketch featuring Will Ferrell, where he insists that a song needs more cowbell. In broader usage, it can refer to highlighting or overemphasizing an aspect of a situation or performance.