Colloquially used as an unfriendly warning to a fellow or fellows caught red-handed. Referring to the strong physical contacts in football,such as tackling or even wrestling.
"Wanna play football?" Officer Booth asked of Kenny,Kevin,Jamie,Matt,Robert,Harun,Uriah,Bill,Jim,and Tom,as he caught them mooning in public.

"Wanna play football?"Musa asked of his twin brother Harun,as he caught Harun trying to steal his medal. "That medal is mine,not yours!"
by JMC70 December 24, 2016
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