NEVER allow a dog to lay on top of you, walk in front of you pulling the leash, lean on you, or stand on for foot. EVERY one of those behaviors is dominant behavior and reinforces that the dog is the alpha in the household pack. This results in defensive aggressive behavior. Further, NEVER reach out and pet one of those dogs you will get bitten.
Sadly, lapdog owners are mostly oblivious to this pack mentality logic, behavior and understanding. They'll excuse it away, or blame you.
Every
Time
This concludes this PSA.
...that is all
...lesson over