Walrus at Six Flags in Vallejo shows off sit-up routine


Video from Six Flags Discovery Kingdom in Vallejo shows Siku demonstrating her sit-up routine.

Despite weighing just shy of a ton, or 1,750 pounds, it seems like Siku is pretty limber.

Just last Sunday, Harbaugh had some fun at Six Flags with Siku, who matched the coach push-up for push-up.

The video was posted on YouTube and got national attention, even airing on "Good Morning America."

Proving it was a friendly competition, Siku gave the smiling coach a big smooch after.

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