Riding a bike can be just like drinking liquor.
You feel amazing, right up until you do something you regret. Something you would never do.
A dangerous affair involving a police car, a pile of traffic cones and a girl you just met while lying in the gutter. Something that makes you wake up with a dry mouth, a sick feeling and a hungry guilt monster gnawing at your viscera.
BONUS TIP: Make some pledges you'll never be able to keep:
"I'll never go that fast again."
"I'm gonna wear a helmet, every time."
"I think it's time for a high visibility vest."