"Everything you don't understand about money combined with everything you don't understand about computers."

If the words 'Bitcoin', 'blockchain' and 'cryptocurrency' fill your brain with the white noise of a TV that's not tuned to anything, you're not the only one.

John Oliver took on the world of cryptocurrencies on this week's 'Last Week Tonight' and discovered that while digital currencies are generating a lot of excitement, there's not a lot of sense behind it.

Thankfully, Oliver was able to enlist Keegan-Michael Key to get potential investors equally excited about the concept of caution.