A 15" penis shoved up the ass of Pre-Med (or Chemistry) students repeatedly over the course of two semesters, the first semester being a reasonably gentle fucking and the second semester coming with the potential for serious gastrointestinal problems. If this does not occur, one's anal passageways are not appropriately loose to accomodate the ass reaming given by the MCAT.
Short for Organic Chemistry, the study of the naming, structure, and synthesizing of carbon-based molecules. It is said that when Pre-Med students die and go to hell, they're perpetually in Orgo Lab.
Bobby wanted to go to Med School, but then he sat Orgo and now he can't sit down because his ass still hurts.
Tommy went to a school where Orgo is easy and got an A, but scored a 21 on the MCAT, so he won't be going to Med School.
"I can't do that much for Rush, bro. Taking Orgo means that I can't drink five nights a week."