I have noticed that it seems that all of my pens have legs. I can have my little glass mug on my desk full of pens one minute and the next they are all but gone. I will admit that I am good at grabbing a pen out of the mug every time I need one even though I already have a pen out. I really do try to pick them all up at the end of the day and put them away. The problem is I am quite sure that half of the ones I get out walk away on their own accord. Right now all of my favorite bic pens are gone. I imagine I will find them in all manner of places…in the couch, under the dining room table, stuck in a kids book, underneath some papers on the counter. They will all make their way home eventually but I sure wish they would never leave!