I like the act of role-playing as duck every now and then.
Interesting!  What is your reason for role-playing as a duck?  Where do you role-play at?
I usually role play in my house with my wife, I do it to fill a social role
What social role are you trying to fill?  I am a little confused?  
Well, we play games such as cops and robbers, where I am the duck "robber"  and my wife is the cop "cat".
Oh!  I sort of understand a little now.  I had never heard of a "robber" being called a duck.  Do you know the reason?
Its just a sort of funny, historical re-enactment. Its silly but we enjoy it that way.
It sounds like you enjoy it.  Do you actually wear outfits for the characters you are portraying?