Why the most dreaded injection is called the ‘peanut butter’ shot

Every recruit, in the first few weeks of boot camp, will get in a line during their medical evaluations and get stuck in the arm with all sorts of needles and have thermometers shoved into some uncomfortable places. Welcome to the military! Out of all the medications recruits get injected with throughout their processing week, none of them are as feared as the almighty "peanut butter" shot.

While these peanut butter shots are awesome, the ones we get in boot camp are far from exciting.

Once the recruit has assumed their most vulnerable position, the medical staff will attach a long and thick needle to a pre-filled vial of bicillin.

Since bicillin kills off a variety of bacteria strands in one shot, it's given to nearly every recruit.

Now, once the medical staff injects the recruits in their butt cheek, the pain hits them like a bolt of electricity. The thick liquid begins to pour into the muscle, but it doesn't spread as fast as you might think.

Oh, no!

The human body absorbs the thick, peanut-butter looking medication at a slow rate because of the liquid's density and creates a painful, red lump on the recruit's ass.

You literally can't sit right for a few days. Since some boot camps require their recruits be highly active, the idea of adding intense physical movement to the shot's excruciating pain just adds to the "peanut butter" shot's awfulness.