I read that the average stomach can hold around 2 litres (that would be 67 US OZ). Mine can hold around 4 litres (134 oz) of non-gassy fluid at a push. I think your problem with beer and fizzy stuff will be the gas. If you can burp it off effectively it could be a goer. I guess with training your stomach could hold more but be careful.

I would agree that whole milk is about the cheapest relatively healthy source of calories. If you can get down 2 litres each day (spread out) on top of your normal eating, you are bound to gain. Nuts are good too. Peanuts are cheap but best go for the unsalted type (or wash off the salt) if consuming a lot of them. 150g of peanuts plus 2 litres milk works out at about 2,200 cals.

Most definitely! Put on a 3XL fleece that had loads of room last year (40 lbs ago) and it's now very tight. Have ordered 4XL for this year! I just love growing out of things.

Really like them! Love the way they rub my shirt when walking. Also love stretching first thing in the morning and feeling the tightness of the fat stretching them out a bit more.

I find that when I gain quickly for a short time (I just gained 8 lbs in a week) I get a hard ball belly, that is the fat all seems to go just to the inside of my belly. I can't continue gaining because the gut pressure gets too high (acid reflux problems). After a week or two, I start to feel softer in other places and the belly gets less hard. I can then hopefully get on with gaining again.

Does anyone else find this too?

It is possible to gain maybe as much as 20-25 lbs in a month - I have done this using the GOMAD (gallon of milk a day) method. However it may need some working up to if you have not seriously gained before.

I agree. However it does not seem to be possible to control where the fat goes. In my case it goes mostly inside creating a hard ball pregnant-looking belly whereas I would prefer the soft squishy stuff more evenly distributed.

Although weight will often increase quickly at first (water gain) I've found it takes up to 2 weeks of big eating (maybe 4000-5000 cals per day) in order to see significant and lasting fat gain. Great when it does appear though!

Don't forget whole milk or heavy cream. Both excellent for gaining and cheap.

If you like drinking whole milk and you are not lactose intolerant then that is a good way to gain. Drink a lot throughout the day on top of all your normal meals. I would suggest up to 2 litres (4US pints) per day.