That was such a (excuse the 'pun') stupid thing to say, all she could think of was rolling her eyes while her brain tried to catch up.

"Oh yes, a not-photographic memory and not-stellar but working at it skill in math which means I get things wrong sometimes, means I'm stupid. Obviously." She couldn't even work up the energy to be peeved at him, so instead she raised her eyebrows and gave him a good stare.

"I suppose you have no problems at all with any topic, always learn whatever it is the first time it's explained and can remember it perfectly a few months later?"