humsuck \'hum-suck\ v - To speed excessively, usu. employed in the gerundive; "We was doin' at least 90; just humsuckin'!" Sometimes shortened to "hum"; "He put a new motor in 'er. You should see 'er hum." Also "hummin'"; "We was just hummin' along!" See also: boot, cuff, honkin', piss-cut, whiff.