50538 Share definition Flag Kisses: 5 0 5 3 8 if you put into a calculator and turn it upside down, it spells B E S O S which is KISSES in Spanish. My wife's license plate is '50538 K'. The K is for my name 'Keith' 50538 by Keith Lipsey June 20, 2004 0 0 Get merch Get the 50538 mug. Buy Now — $32.95 See more merch