"It's lame" means, "It's weak, ineffectual, inferior, contemptible or nasty" Examples: "That's a pretty lame joke." "When you make excuses for laziness, they are lame excuses." "Bigotry is a very lame attitude!" "Only a lame person puts others down."

It means it's stupid. You can't find more stupid nation than Americans, but still for them, lame means silly and stupid.

lame = has no effect; cannot move anything a lame excuse a lame song Missing the bus is a lame excuse for being late. Winston is a perfect example of a mind full of lame ideas.

"Lame" literally means something cannot walk properly. We extend this analogy to situations, ideas, jokes and so on to mean they are not good enough, poor quality or almost useless.

it's lame = mei you yi si