"Did you ever see such an ill-bred lot of fellows before!" "They're not college boys," Dick declared quietly.

"I don't know where they came from, but certainly none of them have ever been through as much as a year in any real college." "They're about as frisky as some college boys," retorted Danny Grin.
"College boys may be full of mischief, at times," Dick returned, "but at least they know how to behave well when they should do so.

College men never think it funny to be rude with women, for instance.

College men are usually the sons of well-bred parents, and they also acquire additional finish at college.

Moreover, the English language is one of the subjects taught in colleges.
These cheeky rah-rah boys were very slip-shod in their speech.
I don't know who these fellows are, but they're not real college men." "Say, it must be nice," remarked Hazelton, "to be able to travel about the country, stopping at such nice hotels.