1. Piece of Shit
2. Parent Over Shoulder
3. Positively Outstanding Service

Point of Sale.
Used at Stores to refer to something that happens at the cash register.

A 'pos' is a Piece of Shit.

Acronym for "Point of Sale". Used to describe anything dealing with the physical area where goods or services are purchased in B2C and sometimes B2B business situations. Then end sales point for retail sales.