get a jag on

Verb

 * 1)  To get drunk.
 * 2) * 1899, Roswell Martin Field and (translators), "The Preference Declared" from, Ode I.38, in Echoes from the Sabine Farm
 * Myrtle is good enough for us,— / For you, as bearer of my flagon; / For me, supine beneath this vine, / Doing my best to get a jag on!