Qbits

A blonde goes to a quantum computing lab and asks the researcher, "Excuse me, what's a qubit?"

The researcher says, "Well, a qubit is a quantum bit, which can be in two states at the same time, like a superposition of ones and zeros."

The blonde looks confused. "I still don't get it."

So, the researcher holds up a quarter and says, "Here, this is a classical bit. It can either be heads or tails, but not both."

The blonde nods. "Okay, I understand now."

The researcher then flips the quarter and says, "And this is a qubit."

The blonde stares at the quarter for a moment before exclaiming, "Wow! It's Schrödinger's currency!"