Actually Fathersday is celebrated in only some europeas countries. I wouldn't know actually where this day is even coming from. In Germany for example men usually make a trip by foot, armed and loaded with beer. The one who falls behind first has to take care of all bills later. I dont know if this part of it or nor. The beer part - yes!
This was my first time having something like this ... in Spain, were usually people dont go out to say "hey, its mensday, lets grab some beers and go make a round". people do that all the time here. not quite - they usually stay in town. Also the topic of the walk was manhood and obviously girls (they of course are not allowed to participate) - stuff you only tell your best friends.