Here are the known emotions existing on 'The Sims 4:' SimsWikia noted that Woohooing between Sims affects emotions which can be either good or bad depending on what a Sim experienced.
SimGuruGraham confirmed via Twitter that Woohoo is a skill on 'The Sims 4' on September 17 but there is no source yet on how the skill levels up or which objects can be used aside from a bed. Woohoo is also the social interaction that makes babies which has been exploited by a mod to allow all genders to give birth. According to SimsWikia, Woohoo affects emotions of any Sims which can be good or bad depending on how it ends up.