This is the funniest thing ever. NSFW(Unsless you have headphones)
Basically it's guys that are watching the porn and they describe to you what is going on in the videos.
"The woman is now...umm...moving the penis up to her face and jerking it off. Umm...she is now going back to the oral sex, focusing on the head of the penis."
You gotta love how far people will go to get off.