To buy an expensive car only for the purpose to show off to other people. Normally meant in relation to middle aged men going through a mid life crisis.
"Wait till my neighbours see me screech into the cul de sac in an Aston Martin, then we will see who the real man is around here."

"Dude you are car peacocking. You need to calm down and get therapy."
by LouieFerook December 22, 2015
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