an extremely great amount; an inexpressibly large quantity. Purely a hyperbolic expression, as the actual number is usually quite low by mathematical standards.
"Man, there were like a billiondy cops at that party last night."
OR
"That elephant took about a billiondy shots to the sternum."
OR
"That elephant took about a billiondy shots to the sternum."
by Crunkheit October 29, 2005
Get the billiondymug.