Loop selection if Vertices have less or more then 4 faces Link to this video

How Blender Guru selected Loops with vertex which has five contiguous faces. When I try to select Loop with vertex which has more or less four vertex Loop selection are breaking on this Vertex





Okay, but what is a difference in my case, why here I can't select all Loops, it breaks right in vertex which has five faces.
Actually it selects the edge all around and by underneath, if you cut an edge on the bottom you'll see that it won't work any more.