LMFAO: Pop group's grandma reveals true meaning of name Share this story email Share this story «Previous 4 of 11 Photos Next » Read the story « » Grandma Goodfoot on the real meaning of LMFAO The youngest of the duo, Sky Blue, is her grandson. Redfoo is Sky's uncle. But to Grandma Goodfoot: "These are my boys. They are both my kids. I don't favor one over the other." She even helped her boys come up with the name of their group.