Big Boy Jake, suppressing testosterone will help you gain enormously. Look up foods which suppress testosterone such as soy products, beans, beer, wheat and liqurice.
Eating bread might be your key. First you become lethargic with no energy so you won't even have to try to burn fewer calories. Then you will crave the foods which are making you lethargic. All you will think about is your break times when you can snack on unhealthy food.
UPDATE
Testosterone is the enemy of weightgain. If you can suppress your 'T' then you can grow the moobs and the hips and the belly whilst becoming the lazy fat slob you wish you were.
More foods killing T
Pepermint or any sort of strong min will reduce T by about half in a week. Mint T is probably the most effective;
www.ebay.co.uk/itm/Peppermint-Herbal-Tea-The-Highest-Quality-Mint-Leaves-25g-900g-UK-Seller/142237378703Flax Oil is like taking oestrogen the feminizing hormone;
www.ebay.co.uk/itm/Peppermint-Herbal-Tea-The-Highest-Quality-Mint-Leaves-25g-900g-UK-Seller/142237378703I'm actually trying to increase my muscles so I am actively avoiding these things. I'm interested in how well this works for your gaining.