There's a short video which a lot of new people have found useful, you might want to share it if you're trying to explain to someone what Mastodon is:

https://tilvids.com/w/f747058d-3991-4046-a1c9-29c184daa0ff

(Video is by nostr:npub14g4knasy9utvt4slrzk7rme75p2x2pfl8005kxlsrml866he7zcsmsxnzh who runs the excellent https://tilvids.com PeerTube server.)