When you feel like you're on vacation and you actually aren't.
Dude: Brooo forget the meeting, let's go to the beach!
Colleague: You've got a serious case of vacation brain. I have to get back to work.
Colleague: You've got a serious case of vacation brain. I have to get back to work.
by chacarron February 03, 2012
by chacarron February 03, 2012