when you have woken up before class, but have plans to spend the day doing something else and you tutor clearly knows that.
Jason:
"hey, what did you do yesterday ?"

Fred:
"well.. I was supposed to go into class but it was valentines day so spend the day doing other things. so I emailed my tutor saying I was ill but he clearly knew we weren't"

Jason:
"ahh man ! what a mind grain.
by creative101 February 14, 2012
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