Metallica lead guitarist Kirk Hammett has shared a recent photo on his verified Twitter account and celebrated his old-time friend, musician and actor Crispin Hellion Glover.

Kirk simply wrote ‘Happy Birthday’ to Crispin and shared a psychedelic GIF.

Here it is:

Last week, Kirk also shared a really scary backstage photo of himself on his Instagram page.

Here is what he wrote:

Mondays, right? #metalmememonday 🤘🖤🤘 📷by @steffyspurs”

You can see the photo below: