The billboard along I-94.
Fans of the team up north have thrown a jab at Ohio State coach Jim Tressel and the Buckeye football program over an ongoing NCAA investigation.
A billboard along Interstate 94 between Ann Arbor and Detroit reads, "Liar, liar, vest on fire!" The gray and red message references Tressel's customary sweater vest and allegations that he knowingly played ineligible players last season.
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It is not clear who purchased the billboard.
Tressel is 9-1 against Michigan.
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