Someone who is obsessed with fancy writing implements and typically uses a different strange pen every day or even every hour.
You can often tell a pen slut by looking at his/her desk: if there are more than 20 Pilot Hi-Precisions, PhD retractables, Marvy Sparklers, and/or fancy souvenir pens, that's a sign. Also, if you ask a pen slut to borrow a pen, he/she will likely rummage around for a Bic ballpoint rather than allow you to use a masterpiece such as his/her Y&C Gell Extreme 0.7 with teal ink.
I am a pen slut; on my desk at work, I have three five-compartment pencil cups that hold a total of 84 pens. My favorites are the Marvy Gel Excels and the San Fran one with the moving cable car in the barrel. No you CANNOT borrow them.
What soybeans become once they are fermented with vinegar and fungus. This supposedly edible concoction smells vaguely like ammonia and tastes mostly like ass. Some people refer to it as a meat substitute, but don't believe them.
Die-hard Vegetarian: Hey, man, want some of my tempeh?
Other person: Nah. Maybe if I were starving to death.
Die-hard Vegetarian: Dang. I don't want my tempeh either....