Some people keep asking me what "2nd degree heart block" is. Here (below) is a good explanation.
2nd degree heart block type I
This rhythm is also called Mobitz I. It is also called Wenckebach. It consists of the PRI getting longer with each electric beat until eventually a P wave occurs but the QRS never shows (essentially skipping a beat). The process is then repeated. This is like showing up for work Monday an hour late, on Tuesday two hours late, and so on until Friday comes around and you don't even show up at all. The following Monday, you start the same cycle again. You could call this behavior "pulling a Wenckebach" but nobody would get it and people would just think you're weird.