For fun.
It's not fun in the eyes of the fellow competitors/participants.
Trust me. I definitely didn't originate this. I'm sure the chap behind it is having a field day. As I said earlier, Royse777 already guessed correctly who I suspected, though he added 2-3 others for effect.
It doesn't really matter anyway, since you didn't wear the signature code. I even read somewhere that he (Royse777) doesn't care or mind if you decided to have the text on your signature for a pay.