How do you cum?

Okay ladies; I was talking about this with some of my girlfriends & I want to see what some of you say! How do you cum? Do you actually feel yourself get wetter down there or not? I can become wetter only from clit stimulation, I can't achieve that from just penetration. But, some of my girlfriends don't have that happen at all but they still do reach orgasm! Just curious to see what you all have happen down there when things are going right!