A phrase used to get out of a situation that you don't want to be in. Works best if you have no dog to begin with, and the person doesn't know you all that well.
Steve "Kevin you wanna come over and watch Night at the Museum 2 with me and my parents?"
Kevin "Oh I would, but my dog just died."
Kevin "Oh I would, but my dog just died."
by Cooolkid64 July 20, 2010