This Sunday's festivities will take sibling rivalry to a whole new level, as brothers John and Jim Harbaugh fight for Super Bowl victories for their respective teams, the Baltimore Ravens and the San Fransisco 49ers.

The fierce competition didn't stop John from pulling a nice little phone prank on his parents. Give it a listen below.

Both head coaches have Michigan roots, playing high school football at Ann Arbor's Pioneer High School, while Dad Jack served as assistant coach for Bo Schembechler at the University of Michigan.

- George McIntyre
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