I'm thinking of giving away a friends furniture
So another person could find enjoyment from the old furniture.
He is too old and his furniture has to be given away to another better person.
Perhaps he's still enjoying his furniture. You should never give away something that does not belong to you. It's akin to stealing and you could get caught.
I will do it whenever I feel like.
You do what you feel like with your own stuff. It's your friend's thing so he does to it whatever he likes.