The kiosk that makes me feel small

These days, you have to order using a machine wherever you go, so haven't you been flustered more than once?
I'm not even that old, but I'm slow at talking, and I get nervous for no reason when there's someone behind me.

Since the kiosk menus, locations, and everything else are different for every place, it makes me feel really intimidated unless it is a place I visit often.