Well, I never seed the ole ferryboat cut up as it did that day,” went on Tobe, “ an' the sight o' that gal's arms a-pullin' away at them chains was enough to make the eyes in a body's head turn a tumbleset to see!1916, Annie Maria Barnes, The Ferry Maid of the Chattahoochee, page 113:
If they jerk into a quick tumbleset, pack in pronto.1943, Jules Leopold, At Ease!: Two Hundred Hours of Fun and Entertainment, page 176:
1 more example
He reached in the desk drawer, pulled out a paper clip, started it on tumblesets between his fingers, and stared at me.2010, Christa Allan, Walking on Broken Glass, →ISBN:
tumbleset
verb
Etymology From tumble + set.
1
Synonym of somersault.
“Git out o' the way; give me plenty of room to tumbleset." one of the bright-eyed little fellows at the Waesche street play ground for colored children said yesterday morning.1898 July 23, “Happiness For Little Ones Wesley Grove Camp”, in Baltimore Sun, page 11:
Audubon and City parks offered picnic grounds resplendent with giant trees, brilliant flowers, and cool grass where we could roll and wrestle and "tumbleset."1965, Louisiana History, page 189: