The Vibe: A long, powerful stretch when crypto prices shoot up fast and keep going higher for months or even years.
The Details: A bull run is the exciting phase where hype, good news, new money pouring in, and FOMO drive Bitcoin and altcoins to new all-time highs. Everyone feels rich on paper, media goes crazy, and it seems like the party will never end. Famous ones include the 2017 run (BTC from ~$1k to $20k) and 2021 (BTC to $69k). Bull runs create massive wealth but always end with a top and eventual bear market.
Pro Tip: Get in early if you can, take profits along the way (DCA out or recoup), and never invest more than you can lose. Enjoy the ride, but stay ready for when it stops.