Rude topics in front of Parents. Reuse water from Ghusl?

Question:

1. Are we allowed to talk about rude Islamic topics in front of your parents?
2. In ghusl can water that drips off your body be used to wash another part of your body

Answer:

1. No respect is of utmost importance
2. No, this water is classed as ‘mae-musta’mal’. If saved in a tub or something, it can be used for other purposes but not for purification – i.e. wudhu, ghusl.