If looking bigger is the goal...

[biggah_traps]

If your goal is to look like a 150 pound small but ripped frat guy go ahead, but if you want to fill out a XXL T shirt and not be fat you may want to up those numbers to. 400, 600, 700. Also a 700 pound stone is harder to lift then a 700 pound deadlift. Once you understand this you will see why your thinking is wrong.

Re-read what mathloser actually says. He plans to keep on gaining weight by eating in a surplus, just not gaining strength or (therefore) muscle. No he will not look like a 150 lb skinny but ripped guy, and yes he will fill out an XXL t shirt, as well as a 50 inch pair of trousers. Might need to resort to a pauncho

[Griffin727]

Re-read what mathloser actually says. He plans to keep on gaining weight by eating in a surplus, just not gaining strength or (therefore) muscle. No he will not look like a 150 lb skinny but ripped guy, and yes he will fill out an XXL t shirt, as well as a 50 inch pair of trousers. Might need to resort to a pauncho

Yeah, there's only 2 things that cause weight gain in a full grown guy.

[FrankNJ]

Mathgainer, I'm not sure how old you are. As a 59 year, I can assure you that unless you're aggressively trying to gain strength, you'll lose it. I'm not sure why exactly, but from my experience, if you go into the gym trying to maintain a certain level (i.e. 300lb squat), it will just get harder and harder resulting in a decline in strength much faster than if you were pushing yourself as hard as possible in an attempt to gain strength.