The moment you are left awestruck as a BAMF/knight in shining armor turns out to of been that nobody, clumsy fumbling geek you once knew.
Before(Book 1): Clumsy, forgetful, few to no close friends, toad for a pet
1. He killed Nagini, Voldemort's snake, with the Gryffindor sword, whilst his head ablaze.
2. Stood up to Voldemort, saying boldly he wouldn't join them until 'Hell freezes over'.
3. He kept recruiting Dumbledore's Army even after Harry, Ron and Hermione had left.
I just saw 'Hiccup' in How to Train Your Dragon 2... Longbottomed again!
v.) an unpopular, bumbling, pathetic person who underwent an extreme personality change, becomes physically attractive, and (sometimes) a BAMF
Derived from the character Neville Longbottom in the Harry Potter series.
A: Is that Mike?!
B: Yeah it's him.
A: OMG really? How did he—
B: He got longbottomed.
When a person goes from being a weak nerdy or unattractive person and then suddenly becomes remarkably attractive.
Can also describe someone becoming very badass.
"Hey did you see the trailer for How to train your dragon 2?"
"Nah i havn't why?"
"Hiccup totally gets Longbottomed!"