So when I was watching the Atlanta Falcons yesterday...

I noticed that sometimes after one of the Falcons tackled one of the Saints, the Falcon player would tap the Saints helmet. I think it is very interesting to watch guys play sports. Sometimes they are highly competitive and aggressive (with fights breaking out amongst teams), but then other times it seems like there is an unseen comradeship. How am I to interpret the helmet tap of an opposing player? And are there some teams that are such big rivals you will never see such behavior displayed to the other team?
So when I was watching the Atlanta Falcons yesterday...
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