UCAS is a university processing system in the United Kingdom. Part of an application consists of a single page document called a personal statement.
This personal statement ideally should explain why you should be accepted to the course.
A UCAS whore is a person who loses all social activity and a life in order to do things to put down on their personal statement. Usually it comes to the point of idiocy whereby they get their parents to phone into school in order to force the school to give their whore spawn more extracurriculars.
A UCAS whore usually wants to do medicine, but is not limited in their course scope. They also do things such as Political Talks despite wanting to do medicine and not realising it will NOT HELP THEM AT ALL get onto the course.
Sadly it is a plague sweeping the teenage youth of Britain.
"Hey, wanna hang out on Saturday?"
"Nah I'm scrubbing the homeless's assholes for my personal statement, then I'm pouring coffee for a local councillor"
"Uh, what course did you want to do again?"
"Good for you. I'm going now *under breath* UCAS whore cuntprick"
"Medicine. Medicine.Medicine. I have no other purpose".