Holy Huge Carrot Batman!

So I was pulling a few of the fun little round carrots up from the garden when I started tugging on this puppy.... Holy HUGE carrot Batman! That's Paul's hand - and the carrot dwarfs it! I'm trying to figure out what happened? Mutant carrot genes? A patch of extra potent fertilizer that landed only on it? The Orange Carrot Fairy decided to grant this carrot's wish of possible world domination? (Glad I caught it before it grew legs!) Or perhaps its as simple as the first seed to germinate, plenty of water and sunshine?