What to do when something comes out of the private organ while playing with one's wife

If mazi had come out, one's wudhu will break. One should wash the private part and renew his wudhu. If semen had come out, then ghusal will become waajib. If mazi or mani comes on to the clothes, one will have to wash that area upon which the impurity had come. Performing Salaah with the impurity on the clothes is impermissible.

And Allah Ta'ala (الله تعالى) knows best.