Retired and handsome, the grandpa lies naked on the examination table, his thick, uncut cock resting on his thigh. The young, eager twink doctor enters, eyes widening at the sight. He approaches, his own cock tenting his white coat, and begins the 'exam.' He strokes the grandpa's shaft, feeling it throb and grow. The grandpa moans, his body responding to the twink's skilled touch. The doctor lubes up and slides a gloved finger into the grandpa's ass, finding his prostate. The grandpa's cock leaks pre-cum, the doctor leans in, licking it off before taking the grandpa's cock into his mouth, deep-throating it.