I read this once on a website but I cant find it now.

Dr. Ritsuko is giving Shinji a medical examination and he has to give a
sperm sample for testing, but he cant get it up to a porno mag.

Ritsuko needs the sample badly so she helps Shinji to get it up by giving
him a handjob then sucking him off.

Anyone know the name of the fic and where I can read it?