A vagina that is suitably
irrelevant and therefore refered as such. The word irellavagina can be used to replace other words in a scentece when one can't think of
the right word, or is just too lazy.
For example:
"I just went and
picked up some irellavagina. We were
all out."
"
I don't know what do to! Maybe I'll just irellavagina.
"God, Katie, could you be more of an irellavagina?"