A person who does not trust his/her best friend, even though the best friend has proven them self to be virtuous.

Scabies are paradisaic mites. They crawl into the warm, dark crevices of the body to borrow under the skin to lay their eggs. The eggs hatch in 3-5 days and then breed, move on, and borrow into other places on the body, to repeat the cycle. Scabies cause an infection under the skin which appear as bumps, red, pimple-like irritations, swelling, blisters, or puss-filled vesicles, that break when you scratch them. People scratch them because they itch intensely, most severely at night. The itch escalates at night because the mites are nocturnal. The itchy infection is caused by the mites’ saliva; night is when the mites feed. These mites can only live for a couple of days alone, but with a body as a host, one female mite can live up to a month, harvesting many generations in that time, living on after her.
They spread from person to person usually from direct physical contact, though not necessarily. They can live in dust, bedding, towels, or clothing, just like any other mite, still transmittable for over three days. They are easily contracted from one person to another in crowded conditions, and more readily in less then hygienic of circumstances.
Because of their love for dark crevices, they are often found in the slits between the toes, armpits, in the fold underneath the breast, navels, genitals, and buttocks. Because they are commonly found in the genitalia and buttocks they are considered Sexually Transmitted, though you could get them from bed hopping, re...

Literally, an armadillo in leprechaun's clothing. Metaphorically, a sleazy, distrustful character (armadillo) who pretends to be someone who can make all of your dreams come true (a leprechaun) but instead is merely out to cause you nothing but misery and shame.

Corruption of the cliques When you are friends with someone and they stab you in the back over a clique or a group of popular kids. They choose that (material things) over your friendship.