I can do that!

To a degree at least, just got gratually better over the last few years without deliberate stretching or severing anything. Altho I mostly use it to get slime out of my throat instead of caughing. Now just tried it to get up to my nose, nothing there at the moment.

I guess I am almost at the "third stage" distance wise.

It helps to exhale quickly to get the meatflap out ontop of the thongue. (Second picture)

I've did research if one could choke on their own thongue several times, because I was worried that it would "fall down there" or get stuck or sth, like a dislocated jaw or a scrotum torsion or sth.