i mean, you can condense it a lot. also liquid calories can add a lot of random bullshit your body does not need, such as sugar and fat. by bulking up i assume you mean muscle so you will never eat the same thing. a sonic desert drink that you would not eat alone, but after a burger and fries alone is 1k calories, your stomach can eat that or it will melt and go on down, leaving room for more. however, its all sugar, fat, and salt and no protein. its just all around terrible food to eat but some find it to taste good so they consume it. an all liquid diet can easily reach 20k calories. infact, that is how many obese people "cheat" the band surgery, however the bypass doesn't off much defense against it either as the liquid just goes on through with no stomach digestion time (which is what makes us feel full).