All is not harmonious in Silicon Valley.

In a recent interview with YouTuber Marques Brownlee, Microsoft billionaire Bill Gates mentioned that he’d opted to buy himself a Porsche electric car. Whilst also praising Tesla, the world famous nerd also stated, when referring to his Porsche, “I’ve got to say — it’s a premium priced car — it is very, very cool. That’s my first electric car and I’m enjoying it a lot.”

Elon Musk has taken to Twitter to respond, and simply used one word that destroyed ol’ Billy – ‘“underwhelming”. Check out the full Tweet below and fire up the popcorn, this could be a good one:

My conversations with Gates have been underwhelming tbh

— Elon Musk (@elonmusk) February 18, 2020