Sliding with "Sound Effects"

Little R loves his new slide....can you tell?  He is also quite the pro at sound effects these days.  I am not sure how all of this started.  I try to make funny noises to get Little R to do stuff he doesn't want to do.  For example, each time he gets up from his sleep, I want him to leave his paci in his crib.  Of course, he doesn't want to do that, so I started taking it out of his mouth and throwing it in myself while making a funny noise.  Now, he thinks it is fun to throw it in himself and make the same noise that I would make.  So, we have the special sound effect noise for throwing the paci in the crib.  We also have a special sound effect for him going down the stairs while I hold his hand.  Now, he has a certain sound he does while sliding.  I really don't know where this "sound effect" came from.  Who knows?  I guess he is inventing his own sound effects now, which is really just too cute:)