Someone once told me that Ship High In Transit originated in the Navy. Perhaps a more knowledgeable Freeper will correct me if that is not true.
(v.) variant (with short i from past participle or noun) of earlier shite, Middle English shiten, Old English scitan; compare Middle Low German, Middle Dutch schiten (Dutch schijten), Old High German skīzan (German scheissen); (noun) re-formation from the v., or continuation of Old English scite (in place names)
v. Old English scitan, from Proto-Germanic *skit- (cf. North Frisian skitj, Dutch schijten, German scheissen), from PIE *skei- "to cut, split, divide, separate" (see shed (v.)). The notion is of "separation" from the body (cf. Latin excrementum, from excernere "to separate," Old English scearn "dung, muck," from scieran "to cut, shear;" see sharn ). It is thus a cousin to science and conscience.The bad connotation is that no puritanical person wants to talk of scat.