Someone's Cranky - S4.E21

Still recuperating from his recent run-in with a bull, a cantankerous Robert is driving everyone crazy with his mean-spirited and nasty behavior. When Robert is told by his doctor that he will need two more weeks of convalescing at his parents' home before he can return to living on his own, everyone figures that's the reason for his foul attitude. But Debra gets to the heart of the matter when, playing amateur psychiatrist, she uncovers the real reason behind Robert's cruel conduct.