This is a really really really old thread but are you talking about a guy putting his legs over his head so his dick is right over his face? What if he shoots massive, enormous loads ?

i'm pretty much a straight guy for the most part, that has always thought seeing a man cum on a woman's face was the hottest. to the extent so much so that in the last couple of years i have even started experimenting bisexually (only oral). my last girlfriend and current one have had a few threesomes with another guy where we've gotten him to cum on my face while i'm fucking her. she's really turned on by it as well and has taken videos and pics for us to enjoy later. it also turns me on to share them and to know it turns another woman on.

I was trying to figure it out too . It would be easy if the man had a very very long flexible dick. Then I think most gals would like to watch. How many have seen a 12 + dick, much less watch him masturbate