A sarcastic phrase used in the form of "you must be having a bubblebath" to imply disbelief or mocking rejection of a suggestion. Effectively means "you must be joking". Elaborations include "having a bubblebath with ......" and "having several bubblebaths and a ......". Also can be shortened to simply "bubble" although this gives less insight into the sexually disturbed mind of the individual using the phrase. "You must be having a bubble froth" would work just as well.
Hobbit #1; "let's go shave our feet"
Hobbit #2; "you must be having a bubblebath"
A sexual innuendo actually refering to the art of graffiti.
I carefully lift the snake from its carrier; it hisses gently but soon quiets. As it is milked of its poison, strange shapes emerge before its eyes, produced by the toxic vapours it inhales, as we are fuelled by our own human intoxicities. When it is milked completely it allows itself to be put back into its bag, seemingly passive but always ready to strike.
"Hey man were you milking the snake last night?"
"Yeah, that was some scary shit in the dark"
"Amazing art though man"