A adjective usually a prefix for crazy. Batshit is not an adequete description for insanity as, lets face it, what's so crazy about bat's shitting ? As they say "everybody poos". Hence Batship was invented to fill this glaring void. If you ever find somebody still using the old outdated term "batshit" please do correct them. Becuase let's face it, a bat on a ship - now that IS crazy!
"Heyy that Britney Speares is Batshit crazy!"
"Err, what? So she's normal? What's wierd about a bat shitting? Are you sure you don't mean Batship crazy?"
"Ohh yeah, dude! What's crazier then a ship full of bats?!?! That's clearly Britney".