Seems to be a German thing--Klopp and Wagner (last season) do/did same. Only Barry Fry used to match their enthusiastic gestures.
Players mek me laugh. Aar wo brought up when if tha scooared a goal all tha got worran appreciative nod frumma team mate or a brief handshake forra worldy goal. Nardays thad think thed won Euro Millions running ararnd and dancing wi each other if they scuff in a six yarder.