Complete bipartite graph

A complete bipartite graph is like having two groups of friends, one group wearing red shirts and the other group wearing blue shirts. In this graph, every red shirted friend is connected to every blue shirted friend, which means they can talk to everyone in the other group. So if there are 3 red shirted friends and 4 blue shirted friends, then there will be 12 connections in the complete bipartite graph. It's like having a big party where everyone is friends with everyone in the other group!