Kicking

If your horse is acting up on the ground.... what do you do? I squeel at him, slap him or kick him in the under belly. What do ya'll do?

I raise my hands way up over my head and HISSSS at them. Or if its really bad I grab the closest thing to hand (usually a stick) and start swinging.
I want to add this is if they are at liberty not on a lead rope.

I yell NO it seems to be the better solution kick your horse is wrong and you will one create more problems than you might already have going

Usually I say "hey" or "no" and give the horse a slap. If I'm walking them in a halter, I usually jerk the rope once. I haven't done the squeal thing, as I don't really know how. XD I think kicking should only be used for certain times. For a small horse or pony, no kicking should be needed, for a large or draft horse sometimes they need something that they can actually feel. I know some draft horses who have no reaction at all to a slap because of their hugeness. If a horse were to kick at me when I was walking behind them or being extremely pushy and not respecting my space, I'd give them a good boot, because that's what a lead mare would do.

Lunge him until his knees smoke and then tie him and continue with what I was doing before he misbehaved.

I usually end up saying something like HEY! But it comes out Heeeeyyyy with a sharp Tuh sound on the end...Like Hate. Or AAAAAAT really gruff and deep like I swallowed a drink of gravel.

If need be I'll use the end of a lead to disengage their hiney or if they are at liberty...I try to puff up myself and stand real tall and say no.

I would never kick my horse...I would feel really silly getting into a kicking contest and losing!!!
My horses usually don't give me all that much grief. Guess I'm lucky.

Jasper has been a turd a few times where I booted him in the belly. Most of the time I just yell knock it off or quit. I i just yell really loud like a horse would.

I do agree some with o0hawaiigirl0o I would never hit my horse

It depends on the severity of the action. For minor things, I yell "NO" and he usually cuts it out. Sometimes I hit him (especially for biting and kicking out while I'm trying to pick his feet). Hitting isn't bad or mean - horses in the herd kick or bite horses that are misbehaving. I'm just being the alpha. If it is really bad, I back him up as punishment (and he knows the difference between just backing up and backing as punishment - it has to do with body language).

I go just sort of go Get out of it firmly but not too loudly, if your horse is being bad and you sqeal at him he may freak out and get worse. I generally try not to hit horses, firstly because I don't like hitting horses, and secondly if they do something really bad and you need to it won't have any effect.

If she's being jolty on the ground I usually make her walk backwards and then forwards and backwards and generally that calms them for some reason. Sometimes a jerk on the halter. I find horses don't repond well if you over react. If you don't give a horse any reward or reaction for a bad event (like stopping if they jump around) then usually they will give up after a few goes because it gets them nowhere.

If I thought my horse may rear I probably would not encourage backing up or over jerking.