full of piss and vinegar

full of piss and vinegar

Having an abundance or excessive amount of boisterous, youthful energy, enthusiasm, or rowdiness. Although we came out into the match full of piss and vinegar, our team just didn't have the skill necessary to beat our cross-town rivals. It took having kids of my own to remember how full of piss and vinegar a child can be at 6 AM.
See also: and, full, of, piss, vinegar