I'm going to call out my dirty suite mate in front of his girlfriend
What is the reason for wanting to call out your suite mate anyway?
I think that that would be the best humiliation for him.
Why would you deliberately want to humiliate another person?  That's a terrible thing to do to someone, especially in front of another person.  Try and be a little more caring!
Aw, jeez, I thought that would be funny.
While it may be funny to you, it may be really upsetting for for him. Do your best to be more sensitive when it comes to the feelings of others.