What part of NO TAP ON GLASS don't you understand??
AIRPLANE ETIQUETTE: THE PERSON IN THE MIDDLE GETS BOTH ARMRESTS. AISLE GUY GETS LEGROOM/BATHROOM ACCESS, WINDOW GUY GETS THE WINDOW AND A PLACE TO REST HIS HEAD. DON'T BE GREEDY.
I don't want to sit on your shoulder
Nor do I intend saying "pieces of eight!"