knocks the chip one's shoulder (verb) throw down the gauntlet: invite to do battle
Detalii: you run the gantlet but throw down the gauntlet
Sinonime: acute, alert, astute,
aware, clear-sighted, clever, discerning, heady,
judicious, keen,
penetrating, percipient, sagacious, savvy*, sharp, sharp-witted, shrewd
Antonime: ignorant, unobservant, unperceptive