Pixiv user tags: "What the heck is this; it's cute", "Colombia!\(>ヮ<)/"

The animated edition (and probably the print version) has a bit more content:

• coffee is not grown in Japan; the climate is not suitable
• growing coffee requires average temperature above 20°C year round
• coffee producing countries are mostly near the equator
• coffee is sensitive to cold and humidity, and require high elevations
• Cafe-chan likes warm places, but that means dressing lightly
• alternate_costume with downblouse fanservice
• "What's the matter? Were you surprised that I'm dressed differently than usual?"
• "Is your line of sight also concentrated around the equator?"

"Colombia!" is a reference to a certain Japanese meme originating from a game show right? Can somebody explain it for me?

Vadosity said:

"Colombia!" is a reference to a certain Japanese meme originating from a game show right? Can somebody explain it for me?

From what I understand, Panel Quiz Attack 25 (A name of Quiz show in Japan) has the question:
“What is the South American country of sharing boundaries over land with Panama in Central America?”
The answer is Colombia and the guy who answered it made a raised hands pose and smug expression.
Because of the rules of the quiz game, he won expensive prize(s) by answering that.

However, before that, he got many 'easy' questions wrong. Irritated by his smug expression and 'lucky' win, 2ch users searched for his information in the web and found a confession from him about cheating in the qualifying test for the show.

Anyway, things happened after that information was spread. End result is that his reputation was damaged (He claimed that it was just a joke, but most people did not believe him).

I believe that the pose, the smug expression in the original picture, and the ensuing chaos is what made it quite (in)famous.