A word used to express the highest amount possible: a number which is equal to all female sexual reproductive organs that ever were and ever will be (past, present, and future) including humans, animals, and plant life.
"There are a vagillion things I'd rather be doing right now than Calculus homework."
On January 21st 2017, a vagillion women marched in the United States and around the world in support of Women's rights and in protest of the new Trump administration.