Mach Finger Butthole
Mach Finger Butthole is when you go so fast your butt feels like it's getting punched and your finger is getting burned.
She hit Mach Finger Butthole and made a tree fall over.
My brother went Mach Finger Butthole and yelled, ‘I’m the fastest!’
That kid ran so fast, he reached Mach Finger Butthole and made the sky shake.