A Minnesota man who ran across a frozen lake naked on a $30 bet lost much more than that -- given the $750 citation he received, a report said.

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The Milwaukee Journal Sentinel reported Friday that John Greely, 18, was spotted running across Silver Lake by a Kenosha County sheriff's deputy who was watching from a nearby boat launch.

Sgt. Gil Benn, public information officer for the Kenosha County Sheriff's Department, wrote in a report: "Deputy Zarletti was parked by the Silver Lake DNR boat launch when he was alerted by a citizen that a male was running across the frozen lake in the nude."

The report said Greely was wearing nothing but socks, and he was sober. Greely was cited for lewd and lascivious behavior, police said.

"It's unknown whether he recovered on his bet," the report said.