I first discovered this a few years ago, actually, when I met Mr. Broe and asked for his autograph. First, he signed it "Tim Crouch," then scribbled it out, saying "whoops, heh heh . . . let me see that again, kid," and then proceded to write "Peter Broe."
Confused, I asked him what the mixup was, and he pulled me aside and confessed to me his secret, with the stipulation that if I told anybody, he would kill me, and that even if I thought I was doing it anonymously, he would know.
Now if you'll excuse me, the doorbell just rang.