186300 Share definition Flag the speed of light in miles per second. used to define anything fast. pronounced 186 three hundred. man, that party last night was way too 186300. hes so 186300 he cant even enjoy it. 186300 by nicklefront March 2, 2008 0 0 Get merch Get the 186300 mug. Buy Now — $32.95 See more merch
