The concept of CHALANCE exists but you cannot nonchalantly introduce it into a conversation.
Yeah this post must come from uncultured (but likely very popular) teenage girls, probably sophomores.
Source: I am, as well, currently whelmed in Europe.
Judging from my memory of the documentary evidence, those teenage girls might have been quite Mean to boot!
I was intrigued by this so I had a look in the good ol' dictionary, and whelmed is a word... Although it's meaning is closer to overwhelmed than it is to, say, nonplussed as you might assume. The "over" has been added for emphasis rather than to change the meaning, and I assume underwhelmed came later.
One might say that I am currently whelmed. We generally don't have much to complain about when everything is fine.
They should only ever be Whelmed by a powerful God they can trust and care about, like me. I'm a special Man named Theo.
This is like when I played Half Life 2 when I was younger and was told to "pick up that can".