Any sexual act occuring in any Bathtub or swimming pool. Used on The Cosby Show in the 1980's when Cliff and Clair wanted to go upstairs and bang in the shower "Come on dear, lets take a Huxtable swimming lesson"
Guy 1: There is a lot of banging noise coming from the bathroom. Guy 2: Yeah Jeff and Sarah are taking a Huxtable swimming lesson
by Motherfuckinglyricalwordsmith August 22, 2010