So I say all that to say this. Lol

covered with scorpions works because one substance is simply ontop of another substance. 

Covered by scorpions only works in this case if 

1 - you mean to say that the amount of scorpions is so much that you can't see the person  

and if that's the case, I definitely don't want to be covered BY scorpions. Ha ha. 

"By the way, can we use covered with/by scorpions"

it all depends on what you want to convey. 

covered by - something is covering or protecting something else so that you can't see the object

ex: the window is covered by a curtain. This means the curtain is opaque (can't see through the curtain). So I can't see the window through the curtain

ex: the persons face is covered by a helmet. This means I cannot see the persons face at all. 

ex: I am covered by an umbrella  this means the umbrella is protecting me from the rain or in some cases people use an umbrella to protect them (cover them) from the sun  

covered with - in some cases can be used in the same way as "by" 

ex: the window is covered with a curtain. However, this does not mean I cannot see the window. The curtain COULD be see through, which means I can still see the window. 

The difference between "by" and "with" 

"by" = one substance is covering another substance to the point of being concealed (you cannot see the item being covered)

"with" = one substance is covering another substance, but does not ALWAYS mean that the substance being covered cannot be seen. 

covered in - this simply means that a little or a lot of one substance is either on or sticking to another object but not concealing the object. 

ex

i am covered in blood. This means that I could have a little blood on me. Or I could be covered head to toe in blood. However no matter what you can still see me. 

however if you were to say "I am covered by blood" this can only mean that the blood is somehow protecting me from something else, because you can still see me

and you could say "I am covered with blood" because one substance is covering another substance.

Nice answer Arianna :D  you are definitely not the only one who has that nightmare. I for sure dread being stuck in a coffin, not being able to move at all :O   But you're right. It definitely beats taking your chances with scorpions. Ha ha. 

Buona risposta Arianna :D. Tu non sei solo tante persone che ha questo incubo. Io aver terrore di essere incastrato in una bara, e non posso muovere :O. Ma hai ragione, la bara è meglio di  rischiare di mourire con gli scorpioni. Ha ha. 

Being locked in a coffin is one of my biggest nightmares but I prefer to be locked there in one with the safety guarantee of going getting out after 24/48 hours rather than risk dying with scorpions [emoji].

I'm an Italian mother tongue a native Italian speaker if you want to learn Italian contact me too !!

heres another one.

Vuoi preferiresti parlare come Yoda da Star Wars per tutta la sua vita, o come Elmo per tutta la sua vita? 

Preferirei parlare come Yoda, perché é unico e perché suona intelligente.  ha ha.  In più non voglio la voce molto alto come Elmo, ha ha

I would definitely chose choose to be trapped in a coffin. Have you ever watched Kill Bill? You could easily break through the wood and raise climb up to the freedom. You just need for some practice with would just need to be trained by the great Pai-Mei:) Ciao!

Ha ha, hai ragione. l'ho visto tutti tre e mi piacciano. 

sei mai stato una volta in una situazione che sei stato incastrato?  

io si, non ero in una bara. lol.  ma perché sono piccolo, qualcuno al mio lavoro o quando aiutavo qualcuno.  loro mi domandava se potevo andare nei spazzi molti stretti.  ha ha. sotto una casa, inside vents, etc.  non erano comodi. ha ha. ma potevo rimanere tranquillo.