Jim Cramer may be the host of CNBC’s “Mad Money,” but that doesn’t mean he is up to date on the latest trends in financial services. Here, he is learning about P2P — which can stand for person-to-person or peer-to-peer — payments.

Mentioned in the video are Venmo, now owned by Braintree, Fiserv’s Popmoney, and Dwolla, which collectively dumbfound Cramer. The video is from Mainstreet, part of TheStreet, the financial news network co-founded by Cramer.