If you want to say the word piss (urinate) with a little more
class, use the word pisseth. Works well with other forms of archaic
language, particularly from the KJV
Bible.
Dost thou need to pisseth, pray tell?
2 Kings 9:8 For the whole
house of Ahab shall perish: and I will cut off from Ahab him that pisseth against the
wall, and him that is shut up and left in
Israel: