I cooked a potato once.. WITH the peel still on.
The bravest thing I've done was probably "save" my ex-girlfriend's life at one point.
We were on holiday and long story short, she was drowning in a lake.
Her foot was stuck on like tree branches and weeds and god knows, maybe a dead body or something, anyways, I noticed she wasn't really "moving" from the same spot in the water anymore, so I swam closer, at which point she had hurt her leg really badly, and due to the pain, she was kind of crouching, when standing up; hard to explain but, her leg hurt so much, that instead of trying to keep her head under water, she was completely under water, crying, and touching her leg because it hurt so much.
So i saw her head missing from above the water on and on, so i swam to her, and I realised what was wrong, and that it was like a serious life-threatening issue.
I took a deep breath and swam to the bottom, and looked what was wrong with her foot, though no real clear water, so it was quite hard to see anything. Most i did was touch everything around her foot, trying to get her loose.
She was panicking though, still going under water with her head, and having trouble to breath, due to the panic, also breathing underwater, which in turn made her cough up water and put her in need of more oxygen, which she couldn't get, so she was actually suffocating herself because of the panic.
Soooooo I pulled her head out of the water, and kissed her, I calmed her down for like 2 minutes and hugged her really tightly, and then instantly dove down, and in pretty much 10 seconds, with all my might, i had gotten her foot loose.
She instantly kind of collapsed, because she had no energy left to swim or keep her head above the water, so then I grabbed her from the back, supported her arms and shoulders, put her neck backwards on my chest/neck, and swam backwards to the shore.
(This is a rescue technique I learnt in school once, but I always failed the tests at school)
She had a really badly twisted ankle and had a hard time breathing for the next 2 hours.
She also had to pee a lot, because of all the water she had drunk, while drowning.
We were all alone in the area, and the closest parent or "grown-up" was about 5 miles away i guess.
So if not for my actions, i don't know, maybe she could've pulled her leg out and swam to shore, but i highly doubt it.
Conclusion: I probably saved her life that day.
Conclusion 2: What you learn in school is very important kids!!
(I don't know if this classifies as brave, but It's what first popped into my mind, on a serious note, and I felt really f**king brave doing what I did, afterwards. I was the man baby!)
Sorry for the wall of text :/
I tried to keep it short :x