There is "nothing in the reasoning of prior deadly weapon cases that would preclude a deadly weapon finding simply because the weapon is not specifically known." Id. "A deadly weapon is 'anything that in the manner of its use or intended use is capable of causing death or serious bodily injury.'" Id.; see TEX. PEN. CODE ANN. 1.07(a)(46). "A weapon or instrument is deadly if by its use or intended use it is capable of inflicting death or serious bodily injury." Id. (citing Parrish v. State, 647 S.W.2d 8, 11 (Tex. App.--Houston [14th Dist.] 1982, no pet.)). Additionally, "deadly weapon" means "anything that in the manner of its use or intended use is capable of causing death or serious bodily injury." TEX. PEN. CODE ANN. 1.07(a)(17)(B) (Vernon 1994). "Serious bodily injury" means "bodily injury that creates a substantial risk of death or that causes death, serious permanent disfigurement . . . ." TEX. PEN. CODE ANN. 1.07(a)(46) (Vernon 1994).