Originally brewed in building 31, Section 5 of the Bronx, NY. Shaint is short for "sure aint". This phrase gained notoriety in the early 1990's.

When someone has to have a bowel movement so bad they faint. In medical terms, defecation syncope or vasovagal syncope. In short, shit-faint...shaint.

To faint whilst shitting. Usually after a particularly nasty curry or if suffering from a fever.

Shit covered taint. Gooey shit on taint

When you are so scared that you faint and shit yourself...

liquid paint like shit that covers the inside of the toilet bowl after a explosive shit

to paint by smearing paint on a canvas,
most of the time the paint is half dried and you smear it with your hand.