Good one...never to late to teach someone some manners.
Actually if the parents didnth teach em, there s very few chance they ll learn it from someone else later in life. It could happen, theorically, but most of the time people once they re "adults" dont listen to anyone else but themselves.
And jizz or spit in your pizza.
I guess it's the last time groink gives a $5 tip to a pizza delivery guy.
That being said, there are also big chances the whole story is what groink wish he had done but didnt do. Looks like all this time spent pumping his biceps doesnt pay much when you're facing a 16 yo pizza delivery kid who's not impressed by "your physique" at all.