I want to exert peer pressure on my friend to get him to drink
Are you serious? Why do you want your friend to drink?
Oh well I was bored and wanted to do something fun together.
You should never pressure anyone to do something that they don't want to do. You are being an overbearing bully and not much of a friend. Let your friend make their own decisions.
I don't get it. I thought my friend would do what I want.
Have you considered that's not what he wants though? You should just let him decide if he wants to drink or not.