Do you just mean whistling while breathing in and also while breathing out? I can do that, but there’s a short break in the whistle when I switch the airflow direction.
Ie I can whistle a long song without pause, but I can’t whistle a single sustained note without a short but noticeable break in the sustain when I switch from breathing out to breathing in and vice versa.
I’ve only ever had poutine from Epcot. I really like it, but for those who have tried it there and also the real thing, does it compare?