I blame my Uncle Roger for this one...
He's the one that introduced me to putting Hot Cocoa powder packets on top of my vanilla ice cream. I was probably 10 at the time that he taught me that and ever since that's how I eat my bowl of ice cream.
Many people think that it's strange, many others have picked up the habit and love it.
Now look at what Dreyer's has come out with. I think that Roger should get some sort of royalties on this one.