When I am raised or excited that of a member allocated transparent, little bit similar on "...

[therteen]

When I am raised or excited that of a member allocated transparent, little bit similar for "greasing". It normally and in general what is it?

[Isaev D.D.]

This absolutely normal phenomenon. During exaltation the secret of glands of Cooper which provide greasing of a urethra and change of acidic medium on alkaline is allocated, that favorably affects mobility and vital activity of spermatozoons during an ejaculation.