A guy who for some reason is always right on everything and you and everyone else feels a strange trust with him. You will tell him thing you shouldn't because he is such a
loveable guy. This originates from the
novel 'Of
Mice and Men'
Example
One
Person One: Slim you don't think Curley should get away with that do you?
'Slim': No and I'll go give Curley what he deserves myself.
Example Two
Person One: Slim, I shouldn't tell you this but I have a crush on Jessica
'Slim':
Dude Jessica is a giant
slut
Person One: I guess you're right