Unnerved by sinister ice cream truck

Tongue firmly cheeked, Facebook Friend Katrina Swaim posts today re: her close encounter with an ice cream truck:

“Am I the only one who finds the sound of the ice cream truck a little bit sinister? Imagine it echoing through the empty streets of our small town at three in the morning, calling out to … whom? Who might be drawn to the sickly yellow glow of that open window, and what loathsome treat lies waiting within? Maybe I’m just bitter because Rocket Pops cost $4 now.”

Question: When did you last buy a treat from an ice cream truck?