No. But one has to eat everyday, so you get plenty of practice.

[He goes back to eating, albeit slowly, so he can demonstrate more:]

Your food moves around as you eat, so you periodically have to use your utensils to check where everything is, and push it back towards the center if anything is getting close to the edges. It can be easy to spill things without realizing.

[Grey's not sure why he's suddenly telling Manabu this, besides not wanting to talk about his dubious career history? He's not sure if Manabu would be all that interested either, it's just... It's a part of himself that's there but he generally doesn't advertise, for many reasons.

And he wants Manabu to know him better. And, hopefully, still like him.]