Xoloitzcuintlied

(/ˌʃoʊ.loʊ.ɪtsˈkwɪn.tlid/)

adj.

Emboldened by drink to attempt the stairs without consulting either handrail.

Sarine was Xoloitzcuintlied enough to refuse the lift, then reconsidered on step three.

Source: Wiktionary