Riddle Me This

Second graders this week had an easy time of it after their exams, just playing word games and puzzle type things, including some riddles.  One of the riddles is

The more you take, the more you leave behind.  What is it?

The answer is supposed to be "Footsteps" and the wordplay is on the word "take".  I walk around the room, looking at my feet helpfully, and someone usually guesses it pretty fast.  But today, someone said, "Girlfriends."  I had to concede that is a correct solution, but far too cynical for a seventeen-year-old to have.