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:
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:
by Pete October 6, 2004