This article originally appeared on Milwaukee Journal Sentinel: JJ Watt taught his 2-year-old son how to twirl a Terrible Towel at brother TJ's Steelers game Sunday. And, 'The Grinch' was involved?

And, on Sunday, NFL legend and Wisconsin native JJ Watt shared a special football tradition with his 2-year-old son at brother TJ's Steelers ... proper Terrible Towel twirling technique for ...