I'm sure it can't help you.
yes it can be very harmful because its animal blood and it might fuse with ur gene and give u aids,etc
Vain is an adjective--a vain man.
Injecting what? The question is incomplete.
Injecting to fast
Vain is an adjective. It has no tense.
If you mean injecting air only then dont, IT WILL KILL YOU
It Was Not in Vain was created in 1957.
vain
Vain already is an adjective.
Meth is bad for you, it hurts because you are injecting a poison.
To do something in vain means that you do not succeed in doing what you are trying to do; to try in vain is to fail.
Vain means conceited, or it may mean to no avail. Here are some sentences.She tried in vain to stand on her head.He was as vain as a peacock."You're so vain!" (a song by Carly Simon)