Go berserk

If someone sneaks my lunch again, I'm actually going to go berserk.

Source: wiktionary

The fans immediately went berserk as the singer walked onstage.

Source: wiktionary

I watched the game in New York City's unofficial Redskins bar. When the game ended, we went berserk, performing a celebratory Fun Bunch and singing "Hail to the Redskins!"

Source: wiktionary

Let's say I touch my own hand with my finger. My brain can perceive that signal and then cancel it out. But Novichok makes it not get cancelled out, so it feels like I'm touching my own hand a million times a second, and every cell in my body goes berserk, and the brain understands that this is the end.

Source: wiktionary