Gaining

I don't think it works like that. Alcohol goes into the bloodstream just as fast whether it's mixed with cola or not. Probably faster if not actually. But anyway I wouldn't suggest it because cola, being a solution of water, is polar and won't mix with oil which is non-polar.

I always thought people got drunk faster on fizzy booze for two reasons:

1) The lemonade/cola adds sugar to the mix and ameliorates the taste of most alcohol.

2) The now-alcoholic bubbles get their contents into the bloodstream faster than a flat drink would. This might be why you can drink genuine (flat) scrumpy and feel fine until it's time to go and then you find out you can't move your legs

That's not how it works, dietary fat does not get directly added to body fat and carbohydrates are fattening because they are converted into glucose, spike your blood sugar which causes in insulin response which then tells your body to convert the sugar to body fat in order to keep you from killing yourself with too much sugar. Fat is fattening in that it has a high calorie count but the concoction you're suggesting would most likely just give you the shits man, and that's no fun as well as counterproductive. Be aware that a high carb diet, while fattening, will put you at high risk for problems such as plaque build up in the arteries and diabetes.

Indeed. SCIENCE!

Yuck!

If I was a gainer, I would much prefer a cake with ice cream than a soda with oil. I can't imagine how it would feel to be burping up Wesson oil.