Legging-down (or up) is a rather boisterous business, some would say vicious. It was normal in Hull when I was a kid. Of course most 'catters know how normal Hull9 is!

On April 1st, after the 12.00 noon deadline for trickery had passed people went around deliberately tripping each other up; no provocation required, just for the hell of it. It was largely a kids' thing (go on, we wouldn't have known it) and even 40 years ago was pretty much frowned on by teachers and such-like. I expect they ban it entirely these days.

Its one (very minor) merit was that the fear of potential revenge in the form of a legging-down did sometimes cause April Fool tricksters to moderate some of their more extreme plans.