1)A cuter way to refer to one's vagina.
2)A way to say vagina when using "baby-talk" to a significant other.
3)A way to refer to vagina in the presence of children or up-tight adults.
"Hey, wanna play with my toogina?"
"Heihh, wanna pay wih my toogina?" (baby-talk)
"So then she pulled down her pants and I saw her....uhhh...toogina...."