Blonde Can't Read

There was a Blonde on an aeroplane who couldn't read. When she went to the loo there was two buttons but she couldn't read what they said. So she asked an assistant what the big red button said. The assistant said it said "Press in emergency" The blonde replied "Well I just did a number 2 so that's an emergency" and moved towards that button " WAIT " the assistant shouted " the White button is flush! That button ......." too late the blonde pressed the button and fell through the hole in which the toilet disappeared through. " That button deposits the toilet" the assistant finished.