God, I hate to say this, but I agree with IloveSBUX again! O god, I'm slipping.
Don't feel bad about serving it to them. They are 100% accountable for what they put in thier bodies. Someone that weight 250+ lbs SHOULD be careful about what they are putting into thier bodies. The information is out there, if they wanted to know the calorie count, they can find it. Its the great part about living in a free nation. If you want to kill yourself slowly by drinking 6 gallons of Starbucks a day, smoking a pack a day, drinking a case a day, that is right, as long as you don't harm others in the process. There is no law againts how often, or how much you can get at Starbucks a day. Don't feel bad, its thier own damn fault.