dot sniffer Share definition Flag one who crawls or sucks up to another. or person with arse sniffing fetish I always knew Marc was a dot sniffer. Look at that dot sniffer in action, he has no shame. dot sniffer by jamesbrown April 21, 2003 0 0 Get merch Get the dot sniffer mug. Buy Now — $32.95 See more merch