This doesn't have a nub does it?

[PandaPink]

I can't make it out a nub all hmm
Can anybody see a nub?
I'm quite good at predicting but I'm struggling with my own.
Thanks for any help.

No I can't see a nub. There are skull theories you could research?

Thanks @Engard the scan is too far on for skull theory unfortunately .

There is a nub.. boy nub looks like

Might sound silly but what is a nub?