Crazy Maybe Lezzy

I feel I must share the tail of my Human Disease professor with all of you. I know that most have heard the story and I appologize for being redundant. However, there are many who have not.
She is a shorter woman maybe 40 years old with a crew cut with a nice salt and pepper hue. Appears to be a normal build at first, until you make your way down the torso and realize she is hiding a innertube in her waistband. The sarcastic smurk on her face cannot be mistaken as she leans against the lab table in the front of the classroom. At first you don't know how to take her as you try and decide the difficulty of the class based purely on the apperance of the instructor... (simply put, she is short, round, and has a lil' lezzy look to her).
So the other day during this class she is talking about AIDS and the whole sharing needles thing. She goes off on a tangent about coke-heads using a new technique called "jacking-off." They put the cocaine into a syringe and pull blood from their body filling the syringe and mixing the blood and cocaine. They promptly inject the mixture back into the body enhancing the already potent high of cocaine. Everyone reacts appropriately with the standard, "ooooooooooo" or "fuuuuuuuuuuuuuuckkk." (with a sigh mixed in) One kid however looks a little deeper into and promptly asks, "Oh yea, how do you know?" With a quick tilt of the head and a witty giggle she says with (no sarcasm at all), "I actually have done it about 200 times. (rolls up her sleeves) You see, I don't want to show you guys my track lines, so I usually shoot up in the crack of my ass... or between my toes." Every immediately laughs uncontrollably until she continues. "You should see how I put a tampon in..." laughter quickly seizes and a soft, ughhhhhhhh comes over the class. "It involves jumping off a building!" The laughter is completly gone at this point and I just begin to pack up my stuff, because I have officially checked out of paying attention to this lady today.
I had a conversation with Mr. O'Connor the other day about a similar situation, yet more generalized. I don't know what it is about instructors swearing. I know I should be used to it, because I have had numerous swearing instructors each semester. Everytime though it gets me, just makes me want to giggle like its the first time I have ever heard that word in my life. Now, if I could only get one of them to use the word "clusterfuck" in a sentence, it would make college all worth while.