My friend pointed a firearm at me as a joke.
How did it feel when your friend pointed a gun at you?
I was afraid at first, but later I thought it was funny.
It's not safe to point guns at people. Even if you're joking around, someone can get seriously hurt. You should tell your friend to be more careful with firearms.
I'm fine now
I'm glad to hear you're fine, but the next time he pulls something like that you might not be so fortunate!  You need to make sure he doesn't do stuff like that in the future to you or to someone else.