Having so much money, you can't count it, nor would you need to. May imply a blase attitude about the money, or sometimes the lack of intelligence necessary to keep track of it.
In the case of expressing or emphasizing an act of absolute stupidity and ignorance, "that guy's head is in the clouds and he's walking in traffic! That's frilliant.
*or*
"Whoever invented memory foam was frilliant! I love my new mattress sooo much!"
An arbitrarily largenumber of something, each individual part of which is of little consequence. From "frill" (something not necessary) + "illions" (suffix on many large numbers)
I recommend you double check that adcopy, because FRILLIONS of people are going to read it.