One of my nephews called me years ago when he was 17. He had removed the front brake to get the front wheel off to fix a flat because he could not get the wheel off otherwise. He could not find the nut that holds the front brake on, so he slid the bolt in and took it for a ride thinking it was not important.
He could not remember what happened, but would I come and fix it for him. He still has the scar on his head.
Yes he is a fing genius.