This is Para's Giving Meds to Ruthless Pigs Method:
1) Place pig on comfortable flat surface. Apologize in advance with a good chin-scratching.
2) Place pig's butt in the crook of your elbow (not shown). Slide your hand down the head to cover the eyes and prepare for.. The Pinch. (Notice the glare she's giving me..)
3) Pinch with your thumb and fingers on the upper jaw, just behind the nose. Pull up slightly, making sure the eyes are covered, and the jaw drops open. The pig is now in prime position for medicinal insertion.