It's a suggestion not too unlike to "be on your best behavior." In this instance it is a recommendation to keep it clean and not to be vulgar, well too vulgar.
Grandma: "Now listen children. I need you to be on your bath behavior in church today. No one is to spit or call the priest a child-molesting pedo again!"
Louie: "Can I at least spit in the holy water, Grandma?"
Grandma: "If I don't see it happen, then it didn't happen."
Louie: "Can I at least spit in the holy water, Grandma?"
Grandma: "If I don't see it happen, then it didn't happen."
by von groovy August 26, 2024
Get the a businessman and black beauty's owner in bath mug.
When a Chinese man ejaculates on you in the shower then proceeds to lick your entire body, spreading the semen.
"Hey Chin do you want to ride some bikes?" "No Mike, I have to give my girlfriend a Chinese bathing."
by The hottest chiken alive December 23, 2013
by Ryan omg'leary January 20, 2017
A reference to a popular anecdote/inside joke in the homestuck fandom, where a cosplayer took a bath in sharpie ink and alcohol to dye their skin grey.
Vriska cosplayer: ‘How are we going to get our skin grey?’
Terezi cosplayer: ‘What about a sharpie bath?’
Laughter ensues.
Terezi cosplayer: ‘What about a sharpie bath?’
Laughter ensues.
by backinthedark May 10, 2023
by Obladi Oblada December 10, 2014