Pissing against walls

(1 Sam.25:22, 25:34; 1 Kg.14:10, 16:11, 21:21; 2 Kg.9:8)

"A person could piss against a tree, he could piss on his mother, he could piss on his own breeches, and get off, but he must not piss against the wall -- that would be going quite too far. The origin of the divine prejudice against this humble crime is not stated; but we know that the prejudice was very strong -- so strong that nothing but a wholesale massacre of the people inhabiting the region where the wall was defiled could satisfy the Deity." -- Mark Twain, Letters from the Earth