verb/a.vwaʁ pi.sin/
To be absent without providing a serious reason.
“Primaire de la gauche : François Hollande n’ira pas voter au second tour « parce qu’il a piscine »” — Left-wring primaries: François Hollande will not be voting at the second round because he "[at the swimming pool]"
Literally, "(plan to) be at the swimming pool".