childish tantrums from McCain & company

McCain campaign throws Social Security’s birthday cake in the trash.

In honor of the 73rd anniversary of President Franklin Roosevelt’s signing of the Social Security Act, the New Mexico Democratic Party attempted to sing “Happy 73rd Birthday to Social Security” outside of a McCain campaign office, “only to have the birthday cake thrown in the trash by the campaign”:

While McCain supporters screamed, “Obama sleeps with a Teddy Bear and a night light,” staffers approached the Democratic group, yelling, took the 20 inch sheet cake that said “Happy Birthday Social Security” and threw it away.

Conchita Cruz, the press secretary for the Democratic Party of New Mexico, called the cake trashing a “perfect metaphor” for McCain’s approach to Social Security policy.

(Think Progress)
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I agree that this seems like a perfect metaphor.
Also, what is with the childish name-calling? What does that even mean?