Difference between 晚安， 晚安安，安安, and 晚安啦 I have some friends in China and I started to learn Chinese. Nothing serious but a few phrases here and there. Due to the time difference the conversation usually ends in one of us saying good night to the other. Rather than just always saying 晚安 all the time, I started to copy some of the things friends have said to me as a means of saying good night.  

However I'm thinking there might be some nuance between these phrases that is lost on me. One time I said 安安 to a male friend and he seemed slightly offended and told me don't talk like a girl.  

Could someone explain to me if there is a difference between these and if so what the connotation of each one is?
晚安 is the standard phrase for "good night"

晚安安 is an incorrect usage of reduplication. Please don't use it.

安安 is also an incorrect usage of reduplication. Not to mention it sounds like a 'baby take' (omitted 晚 and reduplicate 安) Please don't use it to any adult.

晚安啦 is just 晚安 adding a final particle after it.  Depend on the tone and pitch, it adds casual or affectionate feeling to the phrase