How much saliva would you need to lick an entire bath tub?

i really need to know!How much saliva would you need to lick an entire bath tub?
Maybe a gallon, for just one layer of saliva. or half.How much saliva would you need to lick an entire bath tub?
good question, but why do you need salivia does it have to be wet, if so a lot
between ten and sixteen ounces depending on the size of the tub. I would not recommend diluting the saliva with tap water. It just isn't the same.
An entire bath tub worth
ZERO





You could do it dry.
That is disgusting! If you want to find out, then try it out yourself!
not much if the bath tub is full of water.
about half a pint?
Why would you want to do that. Use a sponge if you want to clean it!
i don't even wnt 2 no
What's in the tub?
how big is the bath