Kacper-ing It
When you suddenly start dancing naked and screaming in broken German like a madman
She Kacper-ed it in the grocery store, stripping down to her underwear and yelling 'Bier, bitte!' at the cashier.
He Kacper-ed it during a meeting, doing the can-can and yelling 'Herr Chef, ich bin groß!'
At the park, he Kacper-ed it and made a kid cry with his weird German rants.