I haven't even mentioned that scientists have discovered a bigger Sydney Funnel Web. A regular one grows up to 2 inches which is f**king huge in it's own right. The new one grows up to at least 4 inches and just like the Sydney Funnel Web, the males are the ones packing the execution juice dishing out 5 to 6 times more potent poison than the females. Now, what did scientists name this spider? New Castle Big Boy. Yes, a super sized version of the most dangerous spider on the globe is named Big Boy.