kullerbytta

Etymology
From. Attested since 1689.

Noun

 * 1) a somersault on the ground
 * 2)  a fall or roll
 * 3)  an obvious non-sequitur
 * 1)  an obvious non-sequitur
 * 1)  an obvious non-sequitur
 * 1)  an obvious non-sequitur

Usage notes
"Slå en kullerbytta" instead of "göra en kullerbytta" is also idiomatic.