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?"
"I don't know what do to! Maybe I'll just irellavagina.
"God, Katie, could you be more of an irellavagina?"
by nicole8888nicole May 2, 2008