To the industry insiders out there, let me present this scenario to you:
The girl you had scheduled for your shoot today cancelled. You were counting on a really hot scene and, if all had gone as planned, she probably would have been on your box cover.
Now, you have a production deadline to meet, and four mopes sitting around your set, their dicks in their hands, wanting some action and a paycheck.
Your requirements for the scene aren't two stringent. She doesn't have to do anal, DP or DPP if she doesn't want to. She does, however, have to take at least four loads on her face and look like she's having fun doing it.
Just for grins, you can call on anyone who's been active the last four years.
You want someone with an attitude just short of, "Hell, I'd pay them if they could line up four guys to cum on my face." Who ya gonna call?
(My question was spurred by watching a few clips of Aubrey Addams and Claire Robbins this weekend. Both seem to actually enjoy being sperm sponges in their scenes. Misty May seems to get a kick out of it, too.