Shekarashika (しぇからしか) is Hakata-ben for urusai (うるさい), and means "noisy, annoying, troublesome, persistent, nagging". Example:
Hakata-ben:「しぇからしか。だまっときない」
Shekarashika! Damattokinai!
Standard Japanese: うるさい。少し黙っておけ
Urusai. Sukoshi damatte-oke!
Rough translation: Enough! Shut up for once!