galaxy handshake - a handshake so intense it feels like your balls are about to

a handshake so intense it feels like your balls are about to be thrown into a blender.

I said hi to my friend and he gave me a galaxy handshake so hard I had to sit down.

My teacher did a galaxy handshake with the principal and I got a detention for laughing too loud.

At the gym, the guy in the corner did a galaxy handshake with me and I nearly screamed.