Presumably a blend of roll + frolic; appeared 1811 as rollicking, 1826 as rollick.
rollick (third-person singular simple present rollicks, present participle rollicking, simple past and past participle rollicked)
- To behave in a playful or carefree manner; to frolic or romp.
- (Euphemism for bollock; also spelled rollock) To reprimand.
- ^ “rollicking” in Douglas Harper, Online Etymology Dictionary (2001).