A girl who tried to search her name on Urban Dictionary but got results such as "Super At Masturbating" and "Sexy Attractive Male" so she submitted her own defination that didn't really define her but reached out to other Sams who had the same problem.
Other than that, a Sam is an amazingly smart girl who helps people with homework and other problems.
Usually short tempered, and likes to get things done.
Organized, and goal-oriented.
Also did not send this defination in.
Guy #1: "Dude, I don't get this homework at all!"
Guy #2: "Just go ask Sam, she helped me with last night's assignments."