For the uninitiated, the self-proclaimed investment expert has built a reputation for making horrendously wrong calls on his show and Twitter. Billionaire Elon Musk has swiped at CNBC Mad Money host Jim Cramer. The Twitter boss did this in a tweet today in response to a likely sarcastic comment from Dogecoin co-creator Billy Markus. Markus, The post Elon Musk Joins Crypto Twitter to Dunk on CNBC’s Jim Cramer first appeared on The Crypto Basic .