The canine shifted back and forth in his lacy panties, his cock twitching uncomfortably. He crossed his legs tightly, but it did not prevent the small dribble of urine that stained the smooth satin fronting. "Please," he pleaded softly, looking up from where he knelt before his Mistress. "I'm not going to make it, Ma'am. I...I can't do it." His voice begged for release, and his eyes held true desperation in them as his legs began to shake softly. 

She looked down at him in quiet contemplation, shifting between him and the plush white rug he knelt on. "Perhaps you should have considered that before you had all that coffee with breakfast. And the juice with lunch. Oh, and the tea at the tea party." There was a playfully cruel glint in her eye. "Whatever shall you do now?"