look up any word, like pussy:
 
1.
a weekend celebration of the day of the birth (i.e the day you escaped your mother's wretched womb and escaped out of her vagina) because your birthday happens to fall on a weekend, usually Friday thru Sunday, but could be extended due to holidays, such as the birthend. Someone independently wealthy or at least pretty-much employed even extend it to a birthmonth.
"This weekend is my birthend, so I plan on being intoxicated all weekend, including MLK day because of the holiday."

"I'm hoping to get laid this weekend, since its my birthend and all."
by Duffgirl January 15, 2012