An act of brutality and suffering widely used by the Nazi forces of Germany. Commonly used in persecuting Jewish prisoners, the Nazis would lay a Jew or another prisoner of war down infront of a curb, usually infront of a crowd (who were withholding information) and instruct them to bite down on the curb at gunpoint. The Gestapo was known to instruct infantry to then do the 'stomping' as Gestapo soliders had light boots, and the infantry had the heavier boots.
Something gussied up has been made more attractive, but in a showy or gimmicky way, so it’s often not intended to be a compliment. It can also refer to dressing in one’s finery for some special occasion, when it is intended to be taken more straightforwardly. It is usually considered to be an American expression, dating from the late 1930s or thereabouts.
"I have a hot date tonight, time take a shower and get myself all gussied up."