P.J.
TEAR HIS BUTT UP!!!!!!!!!!!!
And I mean just that. All that back talk, kicking, ect. Oh Hell No!! Now grant it I had that same "laughing" problem with my daughter when she was 3-4 yrs old, she is 6 now and the youngest. I believe what the other lady before me said is true. I don't think some (not all) children understand or think about conseqencies until the time come. Now my son, who is 8 now, that was a very short phase for him when he was about 6 and he was also peer pressed by his sister. At one point I called them Thing 1 and Thing 2 cause they always did the oppoiste of what I told them. With my daughter I had the acting out in public, falling out in the middle of the street, falling out on the bus, the whole 9 yards. Then I realized something, they didn't do that with my husband whom believe heart and soul in "spare not the rod". Because I was tramatized as a child with beatings (my mother would beat me for something, then my grandmother would get me for the same thing, then when I saw my aunt she'd get me too) I didn't want to beat them AT FIRST. For years I tried what you do (time out, talking) but then I realized these kids are a new breed!! They are nothing like how you and I where coming up. Then I thought may-be it's because we had something to FEAR and that's why we didn't do what they are doing.
So from that point forward my tactic changed and now for the past 2 years I say it ONE TIME that's it; then I just start cuttin butt!! No warning cause I told you the first time. At home, out side, at church, don't matter. I figure if your gonna imbarrse me, I'm a return the favor. If I'm in another part of the house and I call them, they better come and see what I want in a timly manner cause I'm not gonna call them again; if they don't come, I cut butt. When I call their attention their response is "yes" or "yes mame'" (not what, huh, none of that) if not I pluck they lips. I learned that if I am firm and consent they will pick up on that really quick and all the playing stops. My son is to the point now where if he sees his sister doing something she not suppose to be doing he trys to warn her, if she don't listen, he tells and the same for him. Cause they know if one did something and the other didn't say nothing they both get it. It's to the point now where the kids wait on my word now not just their father.
Now my daughter still do that "laughting" thing, but all I have to do is look at her and all that stops, she walks over to me hold my hand and she saids "okay mommy, I don't want no beating" and go head bout her business and leave me be. My son will be messing up and I just look at him, he eyes get real wide then he takes a deep breathe and walks away.
LOL
Now you might not have to do it like me; but ONE TIME that all you give him. If he don't listen FOLLOW UP IMMEDIATELY.
Hope this helps,
P.