Additional examples are adjusted to the entries in an automated way - we cannot guarantee that they are correct.
I'd opt for the farting, while letting the other meaning linger, too, for a complete picture of buckish elation.
Drink in hand - he had insisted on pouring his own - Rudolf straddled an armchair in a buckish manner and exercised his charm.
He remembers how people said he looked like a wild steer, gazing about on all sides, holding his head too high, and how they said his brain was buckish, and totally devoid of sober reasoning power.