I think he's underappreciating my backside...

With all due respect to Avril Lavigne, if he likes what he's seeing now, I'll show him a bit of a rearview and then really blow him... Away... Haha! That's terrible...

"Because I was thinking..." I'll just lean forward and... Yup, my shirt is definitely riding up in back...

"If you took the partial derivative..." Let's just scoot forward to the edge of my chair, give him plenty of space to check for whale tails... Haha!

"Like, in each direction..." If I arch my back a little and stick out my butt... With that bottom button still closed, that definitely pulls my shirt up another few inches...

"The results should be two vectors tangent to the surface, right?" Maybe spread my legs... *Shlp* Ha! Fuck I'm wet enough to hear it when my lips part!