How would Lisa feel if she found out that Bart was "smart"?

As Simpsons fans know, Bart is very clever in his pranks, one episode he got interested in chemistry and blew up the pink rubber school with very little material on purpose and he knew what would happen, also in that old episode of the military school he gave 4 perfect shots with a complex weapon, and the fifth hit Skinner's car which was very far from the camp being basically imperceptible to everyone there and he still gave a perfect shot and he knew it.