Originally Posted by AtTheDesk

Writing the wrong date of birth on a group and save blood form.

Making my first visit to the lab to explain my mistake to the rather handsome lab technician before the sample was processed.

Turned to leave but found the door had a keypad on it.

Me (in a ditzy fashion) 'Oh, I thought you only needed to key in a code to get in! What buttons do I press'

Him (looking puzzled) '7878'

I 'exit' myself into the big cold larder where they keep the blood for transfusions.

Too embarassed to leave. Eventually snuck out shamefaced avoiding all eye contact and let myself out the proper exit next door.