When you eat so much spinach that your cum comes out as green as aloe!
I ate so much spinach dip that I aloe bathed her after duffys.
When you shave your pubic hair and leave a trail at the bottom of the bath after after draining the water.
"I told him I prefer him with pubes, but really I'm just sick of scrubbing away his bath carpet."
A bird bath is when someone walks in on you masturbating, forcing you to quickly stick your member back in your pants as you blow your load, leaving a sticky mess all over your "Bird".
Fuck dude, you made me give myself a bird bath when you walked in on me earlier.
The act of shitting in a urinal
Hey Depo, all the stalls were full so I had to bird bath the urinal.
Washing your penis in the sink.
Kevin: Yeah, I was tryna get a blowjob so I went and took a bird bath.
When you pull out during sex and your cum fills up their belly button.
"She wasn't best impressed when I 'Bird Bathed' her last night."
While your brother or sister is Laying on their stomach, Put a funnel in their ass. Fill the funnel with hot water and proceed to dip your balls in funnel and have the other person shart, than have them fart for the jacuzzi effect.
I could use a Mississippi mud bath right now on this cold wet night