A blah is a vagina. Queers and Australians (no relation between those too, of course. :p) typically refer to the vagina as a blah. When
the word vagina is
said quickly, it can
sometimes be mistaken for the word blah.
Go stick it in your blah!
I told Brenton's mother to stick it in her blah, but she didn't hear me.
Last
week, I got Stacy to take her pants off and show me her
floppy blah. It was
nasty.