syphilisaurus Share definition Flag someone that has syphilis, and perhaps knowingly spreads the STD to others because they are a fuck-junkie. scott had sex with three girls yesterday, keeping genus syphilisaurus alive. syphilisaurus by .Allison. September 13, 2006 0 0 Get merch Get the syphilisaurus mug. Buy Now — $32.95 See more merch