A quiz show contestant 
Dear therapist,
I CHALLENGE YOU! Excitement! Mystery! Horses!
Enjoy an all-expenses-paid trip to the mysterious lands of The Mind Of PollyPooic! Marvel at the Waterfalls of Chocolate Goo! Gasp in amazement at the Caves of Calfular Frustration!
Don't miss this once-in-a-career chance - reply now for your chance to gain the prestigious position of That Person What Polly talks to when she makes the appointment in time. Do it now!
Yours sincerely
Polly