Robot Chicken, Season 3

[In a doctor's office, the doctor is about to give a boy named Arthur a vaccination]

Doctor:
Now, this will only hurt for a second. [Arthur screams, swats his arms, and flinches, knocks the syringe out of the doctor's hand. It flies into the air and comes down, impaling the doctor in the eye!] MY EYE!!! MY EYE!!!

[As the doctor groans in pain and stumbles out through the door, he bumps into a table, and a box of scalpels falls off of it and onto the floor. The doctor then steps on the scalpels, which impale his foot. The doctor screams in even more pain and stumbles face first into a glass-doored display case, impaling him further with glass shards! We then cut to the office's waiting room, where several patients are awaiting their appointments and checkups. The injured doctor then bursts through the door, flailing his arms and stumbling around. Everyone flees in terror, and an old woman hits him in the face with her purse, knocking him out the window, where he falls into a dumpster below. Stumbling around on a sidewalk in the city streets, the doctor bounces into the way of a passing car and collides with it, which spins out of control, hits some pedestrians who are strolling on the sidewalk, and crashes into the wall of a porcupine farm. Next, the doctor flies through the farm's window, where he is impaled by the porcupines' quills. Finally, he stumbles out through the front door and screams in agony. We cut back to the doctor's office, where it is shown that the whole thing never happened, the doctor is fine and talking to Arthur from the beginning of the sketch]

Doctor:
And that's what'll happen if you flinch. [Arthur holds out his arm, awaiting the shot] Oh, no, Arthur, this shot doesn't go in your arm. It goes in the tip of your penis.