Why The Law of Natural Selection has passed my family by.

[ladymirth]

Sis: *white-faced* *trembles from head to foot*
Me: What?
Sis: My Mechanics A/Level exam was at 11 AM not 4 PM like I thought.
Time: *is 3 pm*
Me: D: How'd that happen?  
Sis: I must have copied it down wrong!
Me: Like you copied down the date of the exam payment deadline, the date of your SATs and how many other vital dates and times wrong? 
Sis: *has woobie face* 
Me: Aaargh! *headdesk* 

(Ten minutes later)
Sis: *skips in* It's alright!
Me: *not looking up* If you're going to tell me that it's at 4 o'clock after all, so help me God...
Sis: No, no...It's just that I realized I've already taken the M2 exam paper. 
Me: *incredulous* WHAT?
Sis: Yeah, last June. 
Me: Then why the fuck did we pay for it again? 
Sis: Because I didn't get enough marks for it the first time. But the mark's still valid so it's all alright! *skips off merrily* 
Me: *attempts not to hyperventilate* 

My sister is nineteen. She is also a walking exampe of why people need to take a qualification test before being declared legal adults.