The childhood game "Tag" is named Ronia in Spansh. Where the game started is unknown.
"Here you are Taged = Toma la Ronia... with skin grime.."
Ronia build up of dirt on the back of your neck.
"Auerelio.T has build up of Ronia on the back of his neck."
grime,greasy stains,dry sweat,this all has to do with skin related issues as to getting dirty.