I personally cut the sh!t out of my toe on one, but I'm sure everybody has a different experience. The worst thing that ever happened to me toy steppin' was, I was stepping over a baby gate, foot hit one of those hot wheel monster trucks and rolled with it making me rack myself on the gate! Of course you have to be accident prone as hell like me to have a story like that....
Well it just doesn't sound right, I've heard plenty of people say legos in real life. Of course you have proof everybody I've heard say that is wrong. But that means it's a common misconception and that the word lego being plural is an uncommon correct pronunciation. If I ever meme about lego again I'll try to remember for you though :p
I would say that "Legos" is just as correct, because it has become common usage, but if you want to correct people based on a brand, you should be consistent (ie, "LEGO," not "Lego"). That's my take on it.