I'm not daydreaming it's a post hypnotic trance

I forgot to do it during geography

This is geography ?, I was solving a maths problem

I was actually contemplating synchronicity

Wow, I just had an out body experience, I was looking down on you guys...

I was doing geometry, trying to solve the mystery of the Bermuda Triangle

I was doing arithmetic. I was working out how many shopping days till Christmas.