'Darryl' in the singular and in the plural form
I noticed that when Larry talks about his brothers in the plural form (as in the two of them), he still says 'Darryl' without an S. He never says 'The Darryls and I' or 'the two Darryls and I.' It is always just 'Darryl' which sometimes makes you have to pay close attention to see if he is talking about one of them (and to figure out which one, if it is just one)-- or if he is referring to both of them together.
I like how the writers did this, and it's a wonder that it's not as confusing as it should be.