 mount your leg again it's not that attractive so it's more dominant you don't want to shake it off what i would do is if you've done any basic training with the dog at that point that's when i would take the leash and the harness out do maybe a couple of minutes of basic training to establish some positive authority but the more you yell the more you say no no no the more you're actually reinforcing the dog's already humping your legs and excited to yell or scream and get them more excited is not going to resolve it you got to be nice and calm do some training at that point