The slang terms I'm familiar with are: P.I. Private Eye, Peeper and Dick
pansy, girl, wuss
Brainiac, whiz kid, wunderkind,
Rad Tops Ace Rockin'
slack off laze around
There really is only one good slang term for Broadway. It's called the Great White Way.
The best source for private investigator training is at private investigator academy or at a local university that has the program. Those are the best sources.
If by investigator you mean a private investigator, you do not need any particular qualifications. A lot of retired policemen tend to become private investigator, so some skills in detection would be needed.
For myself I took a Private Investigators course,some people have previous Law Enforcement experience but it is not a requirement to be a Private Investigator a good way to start out is get some experience in the field, go to a Private Investigator Company, get hired ,pass a background test,and meet all the requirements the state delegates.
Here are some slang terms for potatoes:SpudsTatersMurphyTots
Some slang terms for arsonist are firebug, torch, and pyro.
fine
Several different colleges offer classes to become a private investigator. Some examples that I found are Boston University, Louisiana State University, and University of Washington.
Here are some examples:CarJalopyFlivverRide
bucksgreenbacks bills
Some slang terms commonly heard in California include "hella" (meaning very or a lot), "catch some waves" (go surfing), and "the Bay" (short for the San Francisco Bay Area). Additionally, "Cali" is often used as an abbreviation for California.
shela
Pito grandote