Raustyk does that sometimes too. Even though Raustyk is a dominant type she does this to me when she gets overly excited. For her, it ONLY happens when she starts licking me excessivly (she loves to "groom" me). I can tell for sure by her body language that she is NOT trying to dominate me, especially so because she is often laying down when she does this so really it's like she's humping the couch or floor and not me. lol

Can you explain more in detail excatly when this happens? Does something seem to trigger the behavior?