Alright, I'm confused. I want to gain muscle mass. I have a thin frame, but if I want to 'enlarge' my body frame I need to grow of course.

I've been order to get big, do I need to put on weight gain (by eating a lot of fat) or do I just train harder (and eat healthy protein, fat and carbs)?

I know Sinep did this massive weight gain prior to cutting,but is there a way I can still gain huge body weight (muscle of course) or do I have to gain the fat in order to create the muscle size?

CONFUSED, and it it's a stupid question, my bad.