Nah, it just tells me the person knows nothing at all about fighting. A headlock is next to pointless. Depending on if I am facing the same direction or the opposite direction I have many escapes ranging from painless to serious injury. I would go painless because a headlock is not a serious threat, but rather a silly highschool prank.
Simple headlock and as you say school boy prank, but not if it is applied as kubi jime and with real intention as I think the original poster really meant......
Shades of Gene Labelle and a certain Steven whatsis name?