Top Definition
A day when your morning wood remains until bedtime. A very persistant erection that hurts and interferes with your ability to have a nice day, often caused by a long night masturbating or having sex. This can also be caused by, but less commonly, shoving a long object through the urethra.
Boss: You seem a bit irritated today - whats wrong?
Worker: Im just kinda having a bad boner day, sir.
by Pooty__Toot April 01, 2008

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.