The definition of "lame"

Our conversation in the car today...


Jack: “Mommy! Nupe-man!”
Me: “Jack, what does that mean?”
Kaylyn: “He’s saying Superman.”
Me: “Oh yeah, Superman!”
Jack: “Mommy, Nupe-man ling!”
Me: “What? Superman what, Jack?”
Kaylyn: He said ‘Superman’s lame’.”
Me: “Superman is lame? Do you even know what that means Kaylyn?”
Kaylyn: “Yeah. You know, like Superman’s girlfriend…Lois LAME.”