What may be this thing i feel when pressing the genitals head?

Hello all, When i press the glans of my penis from the tip where the urethral opening is, i feel something hard like a small bone even when the penis is soft. To see the exact location i am pressing and feeling the hard thing some pictures are attached.

I have noticed this hard feeling before 2 or 3 years, but I am sure it was always there. It does not have any pain or signs of infection, nor it makes any problems with erection. Its just that I am wondering if it is really a natural thing that every one has it or its just me. However I am almost sure that this is the Corpus spongiosum which is between the two Corpus cavernosum and is protecting urethral canal from not being smashed when the Corpus cavernosum is filling with blood during erection. In other words the urethral canal is inside the Corpus spongiosum which can be seen in the images below taken from the wikipedia article for Corpus spongiosum.

Can anyone else confirm that my theory is right, by checking for the described hard feeling like a small bone when the head of the penis is pressed back 1cm from the urethral opening (Urinary meatus).

***this post is edited by moderator *** *** explicit and graphic content*** Please read our Terms of Use