"Tim Tebow can believe it's not butter" is Tim Tebow's favorite Tebowism.
That's from Ted Lewis at the New Orleans Times-Picayune's terrific list of his favorite Tebowisms. Kudos to Lewis for asking Tebow himself for his own personal favorite. Tebow rarely gets "meta" with his own phenomenon; it's nice to see he allows himself some room to find it amusing.
(I'm a traditionalist: "Superman wears Tim Tebow pajamas" remains my favorite.)