Shiz vs Shid - What's the difference?
As a noun shiz
is (vulgar|slang) shit, shite.
As an initialism shid is
(internet) s'laps '''h'''ead '''i'''n ' d
(vulgar, slang) shit, shite
(vulgar, slang) something cool, e.g. 'That's the shiz' meaning 'That's awesome' or 'That's really cool'.
(obsolete) A piece of firewood four feet long.
(obsolete) A unit of length measuring four feet.
"shid", accessed on 2005-05-03, which in turn cites: Richard Hayes, The Negociator’s Magazine: or, The most authentick account yet published of the Monies, Weights, and Measures of the Principal Places of Trade in the World. , John Noon, London, 1740, page 206.
(nonstandard, obsolete, alliteration)
* 1920 Well, gen'lemen, this is better, but a record property shid fetch a record price. — John Galsworthy, The Skin Game , Act II, Scene I