A common phrase that is deeply rooted in the Australian vernacular and frequently used to convey your disappointment in a person or a thing.
"Your performance was as boring as bat shit," said Kyle Sandilands, a past judge from Australian Idol.
by Norman Harvey September 7, 2016

Whoa Nelly! Did you overhear their conversation this morning....Those girls are Bat-shit crazy!
I wonder what's wrong with those girls? They seem to have gone bat-shit crazy.
I wonder what's wrong with those girls? They seem to have gone bat-shit crazy.
by Demands James December 30, 2016

Bat shit meaning: beyond being insane or totally crazy.
Beautiful meaning: attractive, lovely, gorgeous, good looking.
Combine the both, the "subject" is described as bat shit beautiful that combination put together.
Beautiful meaning: attractive, lovely, gorgeous, good looking.
Combine the both, the "subject" is described as bat shit beautiful that combination put together.
by Crasydraw January 19, 2018

A black woman's vagina. You take the lips of the vagina and stretch them apart. The pink inside and dark outside offset to a shade of purple. The fur of course is her pubic hair while you can kind of see a bat face inside.
by HottSauce January 12, 2010

That chick you know that, despite never having sex with another person, is a complete and open slut. She dresses in an overly exposing fashion, wears an an excessive amount of make-up in futile attempt to look "pretty", openly admits to their own sexual fantasies and sexual acts, and can probably take a baseball bat down to the knob.
Guy: YO did you meet up with that chick last night?
Solo: Yeah, we hung. Why?
Guy: Did you... you know...?
Solo: What? Oh HEAVENS no! She's totally a baseball bat betty.
Solo: Yeah, we hung. Why?
Guy: Did you... you know...?
Solo: What? Oh HEAVENS no! She's totally a baseball bat betty.
by Solo Smith March 25, 2008

Originally from WWII means that the radio battery was broken from Useless Battery, but US Bat can be used just to mean broken.
by OJ November 7, 2003

Awesome guy. Otherwise known as Christian Jacobs. Has appeared on various TV shows and movies but now he is the lead singer for a rad band named 'The Aquabats'.
by C'est moi. January 4, 2004
