My ASD son has been so good and sweet. As much as I hate to say this. spanking was the answer!
3 light spats on the diaper and sit him on the couch. He's been wonderful!
I came from an abusive household and didn't want to do this, but this is what my mil did when he was visiting and swore it worked, so I finally tried.
I know it doesn't always work with every child, but yay!