In the edit suite, the producer watched the monitors. "He’s been on the floor for six minutes," she whispered. "The audience looks like they’re undergoing a medical trial."
I can adjust the "Vehicle" to fit exactly what you're looking for. Stewart Lee's Comedy Vehicle
He began a routine about a specific brand of artisanal pear cider. It started simply enough, but three minutes in, he was still talking about the font on the label. Five minutes in, he was reenacting a fictional, aggressive conversation with the pear farmer. By ten minutes, he was lying flat on his back on the stage floor, repeating the phrase "hand-picked by heritage workers" until the words lost all linguistic meaning and became a terrifying, shamanic chant. In the edit suite, the producer watched the monitors