The only way to really use comedian quotes is to do the impersonation at the same time. The words won’t be as funny if you try to quote the person without trying to sound like them at the same time. You don’t have to do it perfectly, because if the words you are using are well known, the people already know who said them and what they sound like. Just a hint of impersonation will help the person hear the original speaker and the words will be even more funny. They will appreciate your humor and everyone will have a great time laughing.