On 2016-09-23 5:48 PM, Cindy Hamilton wrote:
> On Friday, September 23, 2016 at 4:18:01 PM UTC-4, Jeßus wrote:

>>> You want to eat HEALTHFULLY!
>>> Eating "healthy" means eating huge portions.
>>
>> Only in America.
>
> Perhaps he's alluding to the expression "a healthy appetite".
> However, what that means is not eating like a glutton, but
> having the appetite of a healthy person, as opposed to the
> weak appetite of a sick person.
>
> The dictionary informs me that--informally--"healthy" can
> denote "considerable in size or amount", such as "a healthy
> glug of vodka in a pitcher of orange juice". It's odd
> that Sheldon would suddenly use the informal definition,
> when throughout this thread he's been a stickler for what
> he believes to be correct usage.

It is even odder that he is such a stickler about an antiquated usage.
As explained in the article I cited, he is about 100 years out of date.
Meanwhile, the "yowse" he so often uses has never been acceptable.