Grillin' and Chillin'

Why is it, tell me, that there is an innate desire to grill food on Father's Day?

I communicated with my father today, who granted, has no other children... and he's alone there, far away with mom, and he's going to grill.

What is it with Father's Day and grilling? Does somehow having children, and then honoring your achievement of making a child, call for grilling meats and vegetables over a hot heat source, outdoors?

What do mother's do on Mother's Day? Sew? Bake? No, there's no strong association of what to do that is motherly. But fatherly behavior seems to call for grilling.

And I don't understand it.