It is a messy but entertaining endeavor. As you can see below.
A few things to note. Ben always has to sit on the counter and watch. If I say help, he says "no, I watch mama." He loves to watch the blender run, but I think he's a tiny bit afraid of it too. So he likes to make it very clear that he is watching, not helping.
Milkshakes are always enjoyed on the counter for some reason. But I don't complain, as it contains the inevitable mess.
He likes to eat the milkshake with a spoon. The ice cream scoop apparently looked like it could get the job done faster. (Mike's son, for sure.)
A quick video. Vertical again. Old habits die hard.