{{{{after my grandfather's funeral he went berserk when he told a preacher that the burial ground looks too small for my grandfather and then my mom told him to hush and then he just made a stupid face at my mom, "I'm trying to talk here!"}}}}
Maybe you should be in your stepfather's shoes for a moment....
Did your stepfather help pay for funeral's cost?
If he did, maybe he felt the ground was too small... he paid so much
for that spot.
If he didn't pay, then maybe he had respect for your grandfather.
He made that stupid face because he felt he had no respect
from your mother.
I'm no expert 
because I had problems too in family...
And I wish I could have handle the situation differently.
Instead of saying "SHUT THE FUCK UP!" You should have said something else, such as "will somebody pull over, I gotta vomit, I don't feel so good."
Or say anything to distract them... but don't say anything provoking.
If you can't distract them, then don't get involved.
That is your mother, she is an adult... and that is her problem, she was married 3 times.
She picked the men and she married them.
It isn't the "men" fault 100%. It has something to do with her too.
It isn't your problem. You worry about you, Dan. Don't let
that keep you from having happiness. If you have a woman or plan
to get a woman, then have fun dating and have a good healthy protective sex life... think about marriage later if you want to.
If anyone disagree, then speak up.
If a man insulted me, yeah I'll dumped him.
