I suggest you both read Emily Post's Etiquette

To the two women at Pavia on the fifth floor Central Library, who spilled a coffee on the floor which also splattered across my newspaper which was on my table : You both are educated self observed slobs with the manners of a pig.One of you wiped my table using the same napkin one of you cleaned the mess you made off the floor . All the while not apologizing for ruining my newspaper or even acknowledging me . —Self taught manners.