Or POAS refers to the act of taking a pregnancy test or ovulation predictor test. It could also be used in other 'urine testing' contexts too.
I couldn't wait to pee on a stick so I picked up a couple HPTs and took one in the mall restroom.
by Offpill March 11, 2008
to take a pregnancy test; a serious matter
Looks like I'm going to have to pee on a stick!
by jacksassafrass December 26, 2010