I'm going to make my friend cry
Why would you do that? Do you still want to be friends?
No. I just want to upset him as much as he can.
You shouldn't hurt your friend in that way. It is unkind to make someone cry just because you feel like it.
If they aren't my friend, who cares? I want to see if he has more tears, like if he cries any more, will the tears have blood in them?
Well, you said he WAS your friend. Either way, it's mean to willfully inflict emotional pain on others. You should explore your destructive compulsion with a counselor.