do you need certain/good bones for mouth widening?

[jake_okok]

Ppl might call it cope but i've seen srs results from this

However my lips just shrink after a short while of using the device jfl, but this doesnt seem to happen to everyone
Is it just time to admit that my bones are too subhuman for a wide mouth?

has anyone experienced this?

 

[Cristiano88]

Ppl might call it cope but i've seen srs results from this

However my lips just shrink after a short while of using the device jfl, but this doesnt seem to happen to everyone
Is it just time to admit that my bones are too subhuman for a wide mouth?

has anyone experienced this?

What device are you using?