This somewhat reminds me of the least intelligent cousin I have.
She didnt do too badly, she got 3 or 4 C's then the rest were fail grades (both me and bro had 6 B's and a few C's, and two other sibling cousins had straight A's, one with a Law degree and good job now).
Then somewhere along the line a bad egg got ferti..... erm, wait thats too harsh, I mean, she prolly fell down the stairs as an infant :x
Anyway, she had a few C's at GCSE, but managed to get onto some kind of 'Applied Science GNVQ'. During her first year she was 100% fully convinced that she could still get onto medicine.
..... I have no idea what went wrong with that one. Her favorite hobby was pushing people over and laughing at them when they fell :x ... Oh yea, and she ended up becoming rather awesome at both rugby and judo too. She was scary, she could easily pwn people more than twice her size.