from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A member of the FBI
Sorry, no etymologies found.
The Feeb couldn't investigate their way out of their own office.
I'm just speculating, because I don't know that prof, but if he's of the Baby Boom generation, he might just have jumped to the conclusion that any student waving guns and talking about bombs must be an undercover Feeb because "that's how it was back in the 60s," as you mentioned.
Christian Bale was sturdy and studly as Feeb Melvin Purvis but the real special agent was a runt, which is why J Edgar HeeHaw liked having him around: Purvis was even shorter than the diminutive FBI director.
And it’s not that gramps is a Feeb; his mind is very sharp and he only has minimal signs of memory loss.