It's when two men face each other and one man puts his foreskin over the other man's bellend and vice versa so their penises are interlocked. They then proceed to do a little schnoodle dance, which involves waving arms and a bit of jumping.
Hope this helps.
Drew Peacock.
It is when a man with an uncircumsized penis takes his foreskin and puts it over the penis head of another man's cirumsized penis (docking), and then proceeds to masturbate the other man.
Taylor