nickel-sniffer 

a greedy jew

pick up your dollar before some nickel-sniffer grabs it.

nickel-sniffer by Unlce Cletus November 6, 2019

nickel-sniffer 

a seventh-grader characterized as annoying or bratty, often sweaty, and with a high-pitched voice

Look at that nickel-sniffer sevie.

nickel-sniffer by Cythonium October 13, 2023