"Happy birthday to the one and only Brian Johnson who just turned an impressive 77 years young on Oct 5th! 🎉🎂 It's mind-blowing to think that at 77, you've still got the energy, zest, and pure rockstar spirit of someone half your age. 💪 Keep on rockin' and showing us all how it's done. Wishing you an epic day filled with all the things you love, including lots of music and perhaps a bit of mischief too. Cheers to another year of living life to the fullest and inspiring us all to do the same. 🤘🎸 Happy birthday, Brian!"