Dog Bathrobe

Another issue on the hump?
My dog (9 m / o) is neutered and not hump …. except lately when with my bathrobe! and it means serious business. Telling is NOT useless I have to fight him outside. If I accidentally leave my bathrobe in my bed, then drag to bed, it's like in a trance and nothing is heard. (no aggression when I take it away from him). Does it mean anything in particular? Humping know to be an expression of domination. I am very careful not to let go ahead of me, come past and all that other stuff …. Is this new behavior means I'm not successful in showcasing what is the leader?
Humping can be solved in a day. When that mound, you say "No", jets and a little lemon juice in the mouth. I guarantee that after 3 repetitions of this, he will know what it means to be. and Is not, hurt the dog, who can only really bitter for them. Not like Apple bitter Some dogs like.
My Dog Really Likes My bathrobe