Prompt:
MorningWood, solo, solo focus, looking at viewer, open mouth, 1boy, navel, nipples, collarbone, male focus, muscular, window, half-closed eyes, pectorals, topless male, under covers, erection under blanket, visible erection, see-through erection under blanket, lying on bed, head against pillows, white bed, white pillows, from side, indoors, bedroom, bedroom background, on back, sunlight, bed sheet, abs, on bed, waking up, sleepy, yawning,
Modify as you desire.