ready to pull out of the gate. I handed her the barf bag and she looked at me like, "yeah right!". So, in the middle of the plane taxiing, she gets up and runs to the bathroom. I guess there is a rule that the plane has to stop and wait for everyone to be seated, or something. So we stopped right there, causing a airplane traffic jam between the terminals. After she sat down she barely made it until after takeoff before she darted back again. I felt so bad for her, and for everyone next to that bathroom, that was a long flight.