Three hard-bodied marines strip down for a routine physical, but the doctor has other plans. He invites a fourth, hung stud to join them, and the room erupts in a flurry of throbbing cocks and insatiable asses. The men take turns servicing each other, sloppy blowjobs and deep anal penetration driving them wild. The doctor's massive tool is a particular hit, stretching the soldiers' holes to their limits.