During a conference, I was pleasantly surprised to be seated next to a very handsome man. We flirted casually through dinner, then grew restless as the dignitaries gave speeches.
During one particularly long-winded lecture, my new friend drew a # sign on a cocktail napkin. Excited, I wrote down my phone number.
Looking startled for a moment, he flipped the napkin over and drew another # sign, this time adding an X to the upper-left-hand corner.