dropped pass, the boy has been practicing and ready for a second chance. it's been two weeks since the gop debate, but now it's back in the spotlight because of a bad lip reading video. >> let's hear from dr. carson. >> this piece, i think it goes like that. this one -- this piece goes over here. it's part of the tree. >> carson -- >> ahh. >> what you working on? >> a puzzle. uh, i don't know how to do this actually. >> we can move on. you're not losing any play time. >> america. >> and to understand the 2016 presidential race, "tonight" show host jimmy fallon created math equations. take a look.