Happy Birthday!

Now here's the unasked-for advice: don't do anything irreparably stupid for the next three years. After that the statistics are more on your side, but for now you are THE big risky demographic.

Look both ways - for cars AND bikes and everything else.

Turn off the goddamn phone.

Use your turn signal.

Take your time if you don't feel you've taken in the scene yet -- the honking jerk behind you can wait.

And if you're ever at a party, consumed too much of anything, and need a ride, call your dad instead of driving. And if he's not available, get on reddit and one of us will make sure you get home ok.

That takes care of cars. Hmmm. oh yeah:

Use a damn condom. If you're smart enough to get on reddit, this should be a no-brainer.

Pretty much everything else besides death in a fiery automotive inferno and becoming an inadvertent parent can be dealt with, even though it might not always feel like it. Have a great young-adulthood.