A birdbath is a sexual act where someone kneels on the ground with their head tilted back and their mouth wide open. They then act a a recepticle for urine or other liquids.
This is where you stretch out the excess skin of your balls to form a cup. You then proceed to fill it with your ladies favorite beverage, and give her a straw to suck it out with.
I stretched out my balls and gave my gilfriend a birdbath today.
the act of urinating into your partners mouth. Your partner then proceeds to gargle the urine while you dabble your testicles in his/her mouth(like two birds bathing) and proceeding to jerk off on to his/her face.
My stomach hurts, I think I swallowed to much urine while giving Jim a birdbath last night.
a hygene technique used when someone loses fecal control during anal sex. best performed when 'dropping down' from the anvil position, one urinates into the anus and plunges 4-5 times to cleanse the shaft of the penis.
Dude, next time Amy shits your dick, give her a birdbath.