Gregory's Server
It's the "I will reply to this post later when I have more time, but in reality will not get around to it, and eventually just remove it again in 80% of cases to avoid necro-posting" button.
AKA the "I will show this amusing and/or interesting post to my partner/kids in person later, because forwarding posts to non-Mastodon users is inconsistent and kinda kludgy" button.