There could be a couple of ways to do this... First, if you block or mute someone, you can set a duration for that block or mute to remain in effect. Say, a day, or a week, or a month. Whatever number the user puts into the field. The expiry would be shown next to the username in your blocklist. Second, blocking/muting someone could have three options: For a Day, For a Week, Cancel. If you know someone is just being a putz because they are worked up, and will be back to normal (or on their meds) after a while, you could do a one click action to drop them out of sight for a set period of time. Then, when the block lifts and you see them again, if they are still putzing out, with one click you can make the block permanent, if they still deserve it. I suspect that if I made block or mute temporary, there would have been backlash.